RELATED APPLICATION

This application claims the benefit under 35 U.S.C. § 119(e) of U.S. provisional application number 62/349,914, filed June 14, 2016, which is incorporated by reference herein in its entirety.

FIELD OF INVENTION

The disclosure relates to compositions of purified bacterial strains, and methods for treating pathogenic infections, such as Clostridium difficile infections, by administering the compositions to a subject having a pathogenic infection.

BACKGROUND OF THE INVENTION

The collection of bacterial, viral, and fungal commensal microorganisms that reside within and on the human body are collectively known as the human microbiome. The bacterial subset of the human microbiome plays an important role in host nutrient acquisition, development, immunological homeostasis, neurological health, and protection against pathogens (LeBlanc et al. Curr. Opin. Biotechnol. (2013) 24(2): 160-168; Hooper et al.

Science (2012) 336(6086): 1268-1273; Hughes et al. Am. J. Gastroenterol. (2013) 108(7): 1066-1074). As the largest reservoir of mammalian commensals, bacteria residing in the gastrointestinal (GI) tract influence nearly all of these aspects of human biology (Blaser . Clin. Invest. (2014) 124(10): 4162-4165). Consequently, perturbation of the normal bacterial populations within the GI niche, a state known as dysbiosis, can predispose humans to a variety of diseases.

Clostridium difficile infection (CDI) arises after intestinal colonization by the anaerobic spore-forming Gram-positive pathogen Clostridium difficile. Upon colonization of the GI tract, C. difficile produces toxins which causes diarrhea and may ultimately lead to death. This illness is the most common identifiable cause of nosocomial diarrhea and is thought to arise as a direct result of dysbiosis (Calfee Geriatrics (2008) 63: 10-21; Shannon- Lowe et al BMJ (2010) 340: cl296). Not surprisingly, usage of nearly all classes of antibiotics has been associated with CDI, presumably by inducing dysbiosis in the GI tract and thereby enabling C. difficile outgrowth. The Center for Disease Control currently classifies CDI as a public health threat requiring immediate and aggressive action because of its natural resistance to many drugs and the emergence of a fluoroquinolone-resistant strain that is now prevalent throughout North America and Europe. C. difficile was responsible for almost half a million infections and was associated with approximately 29,000 deaths in 201 1 (Lessa et al. NEJM 2015, 372: 825-834).

The antibiotics metronidazole, vancomycin, and fidaxomicin are the current therapeutic options for treatment of CDI. However, metronidazole is inadequate because of decreased response rates and neither metronidazole nor vancomycin prevent disease recurrence, with up to 30% of patients initially responding experiencing a clinical recurrence after antibiotic cessation (Miller Expert Opin. Pharmacother. (2010) 11 : 1569-1578).

Fidaxomicin has been shown to be superior to vancomycin in preventing recurrent CDI (Mullane Ther. Adv. Chronic Dis. (2014) 5(2): 69-84). Because of its narrow spectrum of activity, fidaxomicin is thought to enable normal microbiome repopulation of the gut following dysbiosis and CDI, thereby lowering the likelihood of recurrent disease (Tannock et al. Microbiology (2010) 156 (Pt 11): 3354-3359; Louie et al. Clin. Infect. Dis. (2012) 55 Suppl. 2: S 132- 142). Nonetheless, 14% of fidaxomicin-treated patients experience CDI relapse and mutations conferring reduced sensitivity have already been reported (Eyre et al. J. Infect. Dis. (2014) 209(9): 1446-1451).

Because the risk of recurrent CDI is heightened by antibiotic use and C. difficile spores are inherently recalcitrant to the available chemotherapeutic arsenal, alternative therapeutic modalities are being pursued for the treatment of CDI. Fecal microbiota transplantation (FMT) is one such modality that has shown efficacy against CDI (Khoruts et al. Immunol. Lett. (2014) 162(2): 77-81 ; van Nood et al. N. Engl. J. Med. (2013) 368(5): 407- 415). To date, results of FMT studies for the treatment of CDI, have reported cure rates up to 90% in three randomized controlled studies (Cammarota et al. Alimen. Pharmacol. Therap. (2015) 41(9): 835-843; Kassam et al. Am. J. Gastroenterol. (2013) 108(4): 500-508; van Nood et al. N. Engl. J. Med. (2013) 368(5): 407-415; Youngster et al. Infec. Dis. Soc. Am. (2014) 58(11): 1515-1522).

Despite the success of FMT, this therapeutic approach is not without risks and logistical concerns. Selection of FMT donors is critical and challenging. When FMT donor recruitment is performed with stringent screening and standardization protocols, most prospective donors fail this process. Only 6-10% of prospective FMT donors qualify, with the majority of failures arising from asymptomatic carriage of GI pathogens (Paramsothy et al. Inflamm. Bowel Dis. (2015) 21(7): 1600- 1606; Borody et al. Curr. Opin. Gastroenterol. (2014) 30(10): 97-105; Burns et al. Gastroenterology (2015) 148: S96-S97; Surawicz Ann. Intern. Med. (2015) 162(9): 662-663). Furthermore, variation between donors may lead to variation in FMT efficacy. In addition, the risk of transmission of even non-infectious illnesses may be heightened by FMT. Indeed, significant weight gain has been reported in a patient who received an FMT from an overweight stool donor (Alang et al. Open Forum Infect. Dis. (Winter 2015) 2(1)).

SUMMARY OF THE INVENTION

Provided herein are compositions and methods for the treatment or prevention of pathogenic infections including C. difficile.

In one aspect, the disclosure provides compositions comprising two or more purified bacterial strains of species selected from the group consisting of: Clostridium hathewayi, Blautia hansenii, Blautia producta, Blautia producta ATCC 27340, Clostridium bacterium UC5.1-1D4, Blautia coccoides, Eubacterium contortum, Eubacterium fissicatena, Sellimonas intestinalis, Dracourtella massiliensis, Dracourtella massilinesis GDI, Ruminococcus torques, Anaerostipes caccae, Clostridium scindens, Marvinbryantaformatexigens,

Eisenbergiella tayi, Flavinofractor plautii, Clostridium orbiscindens 1_3_50AFAA,

Lachnospiraceae bacterium 7_1_58FAA, Subdoligranulum, Anaerotruncus colihominis, Anaerotruncus colihominis DSM 17241, Clostridium symbiosum, Clostridium symbiosum WAL-14163, Clostridium bolteae, Clostridium bolteae 90A9, Dorea longicatena, Dorea longicatena CAG:42, Clostridium innocuum, Erysipelotrichaceae_bacterium_21-3, Blautia wexlerae, Clostridium disporicum, Erysipelatoclostridium ramosum, Pseudo flavinofractor capillosus, Turicibacter sanguinis, Lactobacillus mucosae, Ruminococcus obeum,

Megasphaera elsdenii, Acidaminococcus fermentans , Acidaminococcus intestine,

Ruminococcus faecis, Bacteroides cellulosilyticus, Anaerostipes hadrus, Eubacterium rectale, Ruminococcus champanellnsis, Ruminococcus albus, Bifidobacterium bifidum, Blautia luti, Roseburia faecis, Fusicatenibacter saccharivorans, Roseburia faecis, Blautia faecis, Dorea formicigenerans and Bacteroides ovatus.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Clostridium hathewayi, Blautia hansenii, Blautia producta, Blautia producta ATCC 27340, Clostridium bacterium UC5.1-1D4, Blautia coccoides, Eubacterium contortum, Eubacterium fissicatena, Sellimonas intestinalis, Dracourtella massiliensis, Dracourtella massilinesis GDI, Ruminococcus torques, Anaerostipes caccae, Clostridium scindens, Marvinbryantaformatexigens, Eisenbergiella tayi, Flavinofractor plautii, Clostridium orbiscindens 1_3_50AFAA, Lachnospiraceae bacterium 7_1_58FAA, Subdoligranulum, Anaerotruncus colihominis , Anaerotruncus colihominis DSM 17241, Clostridium symbiosum, Clostridium symbiosum WAL-14163, Clostridium bolteae, Clostridium bolteae 90A9, Dorea longicatena, Dorea longicatena CAG:42, Clostridium innocuum,

Erysipelotrichaceae_bacterium_21-3, Blautia wexlerae, Turicibacter sanguinis,

Lactobacillus mucosae, and Bacteroides ovatus.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Clostridium hathewayi, Blautia hansenii, Blautia producta, Blautia coccoides,

Eubacterium contortum, Eubacterium fissicatena, Anaerostipes caccae, Clostridium scindens, Marvinbryanta formatexigens, and Eisenbergiella tayi.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Flavinofractor plautii, Clostridium orbiscindens 1_3_50AFAA, Lachnospiraceae bacterium 7_1_58FAA, Subdoligranulum, Anaerotruncus colihominis, Anaerotruncus colihominis DSM 17241, Eubacterium fissicatena, Sellimonas intestinalis, Dracourtella massiliensis, Dracourtella massilinesis GDI , Ruminococcus torques, Clostridium

symbiosum, Clostridium symbiosum WAL-14163, Clostridium bolteae, Clostridium bolteae 90A9, Dorea longicatena, Dorea longicatena CAG:42, Blautia producta, Blautia producta ATCC 27340, Clostridium bacterium UC5.1-1D4, Clostridium innocuum, and

Erysipelotrichaceae_bacterium_21 -3.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Clostridium orbiscindens 1_3_50AFAA, Anaerotruncus colihominis DSM 17241 ,

Dracourtella massilinesis GDI, Clostridium symbiosum WAL-14163, Clostridium bolteae 90A9, Dorea longicatena CAG:42, Clostridium bacterium UC5.1-1D4, and

Erysipelotrichaceae_bacterium_21-3.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Clostridium orbiscindens 1_3_50AFAA, Anaerotruncus colihominis DSM 17241,

Sellimonas intestinalis, Clostridium symbiosum WAL-14163, Clostridium bolteae 90A9, Dorea longicatena CAG:42, Clostridium bacterium UC5.1-1D4, and

Erysipelotrichaceae_bacterium_21_3.

In some embodiments of the compositions provided herein, the composition comprises purified bacterial strains Clostridium orbiscindens 1_3_50AFAA, Anaerotruncus colihominis DSM 17241 , Dracourtella massilinesis GDI , Clostridium symbiosum WAL- 14163, Clostridium bolteae 90A9, Dorea longicatena CAG:42, Clostridium bacterium UC5.1-1D4, and Erysipelotrichaceae_bacterium_21-3.

In some embodiments of the compositions provided herein, the composition comprises purified bacterial strains Clostridium orbiscindens 1_3_50AFAA, Anaerotruncus colihominis DSM 17241, Sellimonas intestinalis GDI, Clostridium symbiosum WAL-14163, Clostridium bolteae 90A9, Dorea longicatena CAG:42, Clostridium bacterium UC5.1-1D4, and Erysipelotrichaceae_bacterium_21 _3.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Flavinofractor plautii, Anaerotruncus colihominis, Dracourtella massiliensis, Clostridium symbiosum, Clostridium bolteae, Dorea longicatena, Blautia producta, and Clostridium innocuum.

In some embodiments of the compositions provided herein, the composition comprises purified bacterial strains Flavinofractor plautii, Anaerotruncus colihominis,

Dracourtella massiliensis, Clostridium symbiosum, Clostridium bolteae, Dorea longicatena, Blautia producta, and Clostridium innocuum.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Flavinofractor plautii, Anaerotruncus colihominis, Eubacterium fissicatena, Clostridium symbiosum, Clostridium bolteae, Dorea longicatena, Blautia producta, and Clostridium innocuum.

In some embodiments of the compositions provided herein, the composition comprises purified bacterial strains Flavinofractor plautii, Anaerotruncus colihominis, Eubacterium fissicatena, Clostridium symbiosum, Clostridium bolteae, Dorea longicatena, Blautia producta, and Clostridium innocuum.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Flavinofractor plautii, Lachnospiraceae bacterium 7_1_58FAA, Subdoligranulum, Anaerotruncus colihominis, Eubacterium fissicatena, Ruminococcus torques, Clostridium symbiosum, Clostridium bolteae, Dorea longicatena, Blautia producta, Clostridium innocuum, Erysipelotrichaceae_bacterium_21-3, and Bacteroides ovatus.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Clostridium orbiscindens 1_3_50AFAA, Anaerotruncus colihominis DSM 17241, Dracourtella massUiensis GDI, Clostridium symbiosum WAL-14163, Clostridium bolteae 90A9, Dorea longicatena CAG:42, Clostridium bacterium UC5.1-1D4, Erysipelotrichaceae_bacterium_21-3, and Bacteroides ovatus.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Clostridium orbiscindens 1_3_50AFAA, Anaerotruncus colihominis DSM 17241,

Sellimonas intestinalis, Clostridium symbiosum WAL-14163, Clostridium bolteae 90A9, Dorea longicatena CAG:42, Clostridium bacterium UC5.1-1D4,

Erysipelotrichaceae_bacterium_21-3, and Bacteroides ovatus.

In some embodiments of the compositions provided herein, the composition does not include a bacterial strain of the species Flavinofractor plautii, Subdoligranulum, or

Lachnospiraceae bacterium 7_1_58FAA. In some embodiments of the compositions provided herein, the composition does not include a bacterial strain of the species Bacteroides ovatus. The composition of any one of claims 4-12, wherein the composition does not include a bacterial strain of the species Flavinofractor plautii, Subdoligranulum, Clostridium orbiscindens 1_3_50AFAA, or Lachnospiraceae bacterium 7-<_l_58FAA.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Clostridium scindens, Clostridium hathewayi, Blautia hansenii, Blautia wexlerae, Blautia producta, Blautia coccoides, Dorea longicatena, Clostridium innocuum,

Erysipelotrichaceae_bacterium_21-3, Flavinofractor plautii, Lachnospiraceae bacterium 7- _1_58FAA, Subdoligranulum, Anaerotruncus colihominis, and Clostridium symbiosum. In some embodiments of the compositions provided herein, the composition does not include a bacterial strain of the species Flavinofractor plautii, Subdoligranulum, or Lachnospiraceae bacterium 7_1_58FAA.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Clostridium scindens, Clostridium hathewayi, Blautia hansenii, Blautia wexlerae, Anaerotruncus colihominis, Dorea longicatena, Clostridium innocuum,

Erysipelotrichaceae_bacterium_21-3, Flavinofractor plautii, Lachnospiraceae bacterium 7- _1_58FAA, Subdoligranulum, Turicibacter sanguinis, and Lactobacillus mucosae. In some embodiments of the compositions provided herein, the composition does not include a bacterial strain of the species Flavinofractor plautii, Subdoligranulum or Lachnospiraceae bacterium 7_1_58FAA. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Dorea longicatena, Ruminococcus obeum, Megasphaera elsdenii, Acidaminococcus fermentans, Acidaminococcus intestine, Ruminococcus faecis , Bacteroides cellulosilyticus, Anaerostipes hadrus, Flavinofractor plautii, Eubacterium rectale, Ruminococcus

champanellensis , Ruminococcus albus, Bifidobacterium bifidum, Ruminococcus faecis, Blautia luti, Roseburia faecis, Fusicatenibacter saccharivorans, Blautia faecis, Dorea formicigenerans , and Blautia hansenii.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains of species selected from the group consisting of: Acidaminococcus fermentans, Acidaminococcus intestine, Anaerostipes hadrus, Blautia faecis, Blautia hansenii, Dorea formicigenerans, Dorea longicatena, Eubacterium rectale, Flavinofractor plautii, Fusicatenibacter saccharivorans, Megasphaera elsdenii, Roseburia faecis, Ruminococcus champanellensis, Ruminococcus albus, Ruminococcus faecis, and Ruminococcus obeum.

In one aspect the disclosure provides compositions comprising two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: l-83 and 124-159.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: l-23, SEQ ID NO:83, SEQ ID NOs: 124-159.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21. In some embodiments of the compositions provided herein, the composition comprises purified bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157. In some embodiments of the compositions provided herein, the composition comprises purified bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20 and SEQ ID NO:21, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some

embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-156, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 157-159.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21 and SEQ ID NO:22. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequence selected from the group consisting of SEQ ID NO: 124-145, SEQ ID NO: 152-159, SEQ ID NO: 18, and SEQ ID NO: 22.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21 and SEQ ID NO:22, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some

embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124-145 and SEQ ID NO: 152-156, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 157-159.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10 and SEQ ID NOs: 14-22. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequence selected from the group consisting of SEQ ID NOs: 124-159, SEQ ID NO: 18, and SEQ ID NO: 22.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 14-22 and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 129-156, SEQ ID NO: 18, SEQ ID NO: 22, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 157-159.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21 and SEQ ID NO:83. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID Nos: 124-159 and SEQ ID NO: 83.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21 and SEQ ID NO:83, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-156 and SEQ ID NO: 83, and wherein composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 157- 159.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22 and SEQ ID NO:83. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, SEQ ID NO: 22, and SEQ ID NO: 83,

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22 and SEQ ID NO:83, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-145, SEQ ID NOs: 152- 156, SEQ ID NO: 22, and SEQ ID NO: 83, wherein composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 157- 159.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NOs: 14-22, and SEQ ID NO:83. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, SEQ ID NO: 18, SEQ ID NO:22, and SEQ ID NO: 83.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 14-22 and SEQ ID NO:83, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124-15, SEQ ID NO: 18, SEQ ID NO:22, and SEQ ID NO: 83, wherein composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 157- 159.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: l, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO: 10, SEQ ID NO: 12, SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO: 18, and SEQ ID NO:21.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: l, SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO:6, SEQ ID NO: 10, SEQ ID NO: 12, SEQ ID NO: 14, SEQ ID NO: 18, and SEQ ID NO:21.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs:24-79. In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs:24-27, SEQ ID NO:32, SEQ ID NO:34, SEQ ID NO:35, SEQ ID NO:37, SEQ ID NO:38, SEQ ID NO:40, SEQ ID NO:43, SEQ ID NO:44, SEQ ID NO:46, SEQ ID NO:47, SEQ ID NO:51, SEQ ID NO:55, SEQ ID NO:56, SEQ ID NO:62, SEQ ID NO:63, SEQ ID NO:67, SEQ ID NO:68, SEQ ID NO:70, SEQ ID NO:72, SEQ ID NO:76 and SEQ ID NO:77.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO:21, and SEQ ID NOs:80-82.

In one aspect the disclosure provides compositions comprising two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs:84-123.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:88, SEQ ID NO:89, SEQ ID NO:90, SEQ ID NO:91, SEQ ID NO:93, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, SEQ ID NO: 101, SEQ ID NO: 102, SEQ ID NO: 103, SEQ ID NO: 105, SEQ ID NO: 106, SEQ ID NO: 108, SEQ ID NO: 109, SEQ ID NO: 110, SEQ ID NO: 121, and SEQ ID NO: 122.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:88, SEQ ID NO:89, SEQ ID NO:99, SEQ ID NO: 103, SEQ ID NO: 105, SEQ ID NO: 106, SEQ ID NO: 108, SEQ ID NO: 109, and SEQ ID NO: 121.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:93, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO: 102, SEQ ID NO: 106, SEQ ID NO: 110, and SEQ ID NO: 122.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO: 102, SEQ ID NO: 106, SEQ ID NO: 110, and SEQ ID NO: 122, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO:93.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:93, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO: 101, SEQ ID NO: 102, SEQ ID NO: 106, SEQ ID NO: 110, and SEQ ID NO: 122.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO: 101, SEQ ID NO: 102, SEQ ID NO: 106, SEQ ID NO: 110, and SEQ ID NO: 122, and wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO:93.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:93, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, SEQ ID NO: 103, SEQ ID NO: 105, SEQ ID NO: 106, and SEQ ID NO: 122.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:90, SEQ ID NO:91, SEQ ID NO:93, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, and SEQ ID NO: 105.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:84, SEQ ID NO:85, SEQ ID NO:92, SEQ ID NO:93, SEQ ID NO:96, SEQ ID NO:97, SEQ ID NO:99, SEQ ID NO: 100, SEQ ID NO: 104, SEQ ID NO: 107, SEQ ID NO: 111, SEQ ID NO: 112, SEQ ID NO: 113, SEQ ID NO: 114, SEQ ID NO: 115, SEQ ID NO: 116, SEQ ID NO: 117, SEQ ID NO: 118, SEQ ID NO: 119, and SEQ ID NO: 120.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:84, SEQ ID NO:85, SEQ ID NO:92, SEQ ID NO:93, SEQ ID NO:96, SEQ ID NO:97, SEQ ID NO:99, SEQ ID NO: 104, SEQ ID NO: 107, SEQ ID NO: 111, SEQ ID NO: 112, SEQ ID NO: 113, SEQ ID NO: 114, SEQ ID NO: 115, SEQ ID NO: 116, SEQ ID NO: 117, and SEQ ID NO: 119.

In some embodiments of the compositions provided herein, the composition comprises two or more purified bacterial strains, wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:86, SEQ ID NO:95, SEQ ID NO:98, SEQ ID NO: 110, SEQ ID NO: 122, and SEQ ID NO: 123.

In some embodiments of the compositions provided herein, the composition comprises at least one bacterial strain from Clostridium cluster XlVa and at least one bacterial strain from Clostridium cluster XVII. In some embodiments of the compositions provided herein, the composition comprises at least one bacterial strain from Clostridium cluster IV and at least one bacterial strain from Clostridium cluster XVII. In some embodiments of the compositions provided herein, the composition comprises at least one bacterial strain from Clostridium cluster XlVa, at least one strain from Clostridium cluster IV and at least one bacterial strain from Clostridium cluster XVII.

In some embodiments of the compositions provided herein, the composition comprises at least one Bacteroides strain. In some embodiments of the compositions provided herein, the composition does not include Clostridium scindens. In some embodiments of the compositions provided herein, the composition comprises at least 3, at least 4, at least 5, at least 6, at least 7, at least 8, at least 9, at least 10, at least 11, at least 12, at least 13, at least 14, at least 15, at least 16, at least 17, at least 18, at least 19, or at least 20 purified bacterial strains.

In some embodiments of the compositions provided herein, one or more of the bacterial strains are spore formers. In some embodiments of the compositions provided herein, one or more of the bacterial strains are in spore form. In some embodiments of the compositions provided herein, each of the bacterial strains is in spore form.

In some embodiments of the compositions provided herein, one or more of the bacterial strains is in vegetative form. In some embodiments of the compositions provided herein, each of the bacterial strains is in vegetative form.

In some embodiments of the compositions provided herein, the composition comprises only obligate anaerobic bacterial strains. In some embodiments of the

compositions provided herein, the composition comprises bacterial strains that originate from more than one human donor.

In some embodiments of the compositions provided herein, one or more of the bacterial strains are baiCD-. In some embodiments of the compositions provided herein, each of the bacterial strains is baiCD-. In some embodiments of the compositions provided herein, the composition does not mediate bile acid 7-alpha-dehydroxylation. In some embodiments of the compositions provided herein, the composition inhibits C. difficile toxin production. In some embodiments of the compositions provided herein, the composition inhibits C. difficile replication and/or survival.

In some embodiments of the compositions provided herein, the bacterial strains are lyophilized.

In some embodiments of the compositions provided herein, the composition induces the proliferation and/or accumulation of regulatory T cells (Tregs).

In one aspect, the disclosure provides compositions comprising two or more purified bacterial strains, wherein the composition comprises at least one bacterial strain from Clostridium cluster XlVa and at least one bacterial strain from Clostridium cluster XVII. In one aspect, the disclosure provides compositions comprising two or more purified bacterial strains, wherein the composition comprises at least one bacterial strain from Clostridium cluster IV and at least one bacterial strain from Clostridium cluster XVII. In one aspect, the disclosure provides compositions comprising two or more purified bacterial strains, wherein the composition comprises at least one bacterial strain from Clostridium cluster IV, at least one bacterial strain from Clostridium cluster XlVa and at least one bacterial strain from Clostridium cluster XVII.

In some embodiments of the compositions provided herein, the composition comprises at least one Bacteroides strain. In some embodiments of the compositions provided herein, the composition does not include Clostridium scindens.

In some embodiments of the compositions provided herein, the composition comprises at least 3, at least 4, at least 5, at least 6, at least 7, at least 8, at least 9, at least 10, at least 11, at least 12, at least 13, at least 14, at least 15, at least 16, at least 17, at least 18, at least 19, or at least 20 purified bacterial strains.

In some embodiments of the compositions provided herein, one or more of the bacterial strains are spore formers. In some embodiments of the compositions provided herein, one or more of the bacterial strains are in spore form. In some embodiments of the compositions provided herein, each of the bacterial strains is in spore form.

In some embodiments of the compositions provided herein, one or more of the bacterial strains is in vegetative form. In some embodiments of the compositions provided herein, each of the bacterial strains is in vegetative form.

In some embodiments of the compositions provided herein, the composition comprises only obligate anaerobic bacterial strains.

In some embodiments of the compositions provided herein, the composition comprises bacterial strains that originate from more than one human donor.

In some embodiments of the compositions provided herein, one or more of the bacterial strains are baiCD-. In some embodiments of the compositions provided herein, each of the bacterial strains is baiCD-. In some embodiments of the compositions provided herein, the composition does not mediate bile acid 7-alpha-dehydroxylation. In some embodiments of the compositions provided herein, the composition inhibits C. difficile toxin production. . In some embodiments of the compositions provided herein, the composition inhibits C. difficile replication and/or survival.

In some embodiments of the compositions provided herein, the bacterial strains are lyophilized.

In some embodiments of the compositions provided herein, the composition induces the proliferation and/or accumulation of regulatory T cells (Tregs).

In one aspect, the disclosure provides a pharmaceutical composition comprising any of the compositions provided herein further comprising a pharmaceutically acceptable excipient. In some embodiments of the pharmaceutical compositions provided herein, the pharmaceutical composition is formulated for oral delivery. In some embodiments of the pharmaceutical compositions provided herein, the pharmaceutical composition is formulated for rectal delivery. In some embodiments of the pharmaceutical compositions provided herein, the pharmaceutical composition is formulated for delivery to the intestine. In some embodiments of the pharmaceutical compositions provided herein, the pharmaceutical composition is formulated for delivery to the colon. In one aspect, the disclosure provides a food product comprising any of the compositions provided herein further comprising a nutrient.

In one aspect, the disclosure provides a method of treating a pathogenic infection in a subject, comprising administering to the subject a therapeutically effective amount of any of the compositions or food products provided herein to treat the pathogenic infection.

In some embodiments of the methods provided herein, the pathogenic infection is C. difficile, Vancomycin Resistant Enterococci (VRE), Carbapenem Resistant

Enterobacteriaceae (CRE), Neisseria gonorrheae, Multidrug Resistant Acinetobacter, Campylobacter, Extended spectrum beta-lactamese (ESBL) producing Enterobacteriaceae, Multidrug Resistant Pseudomonas aeruginosa, Salmonella, Drug resistant non-typhoid Salmonella, Drug resistant Salmonella Typhi, Drug resistant Shigella, Methicillin Resistant Staphylococcus aureus, Drug resistant Streptococcus pneumoniae, Drug resistant

Tuberculosis, Vancomycin resistant Staphylococcus aureus, Erythromycin Resistant Group A Streptococcus, Clindamycin resistant Group B Streptococcus, and combinations thereof. In some embodiments of the methods provided herein, the pathogenic infection is C. difficile. In some embodiments of the methods provided herein, the pathogenic infection is

Vancomycin-Resistant Enterococci.

In some embodiments of the methods provided herein, the subject is human. In some embodiments of the methods provided herein, the subject is an asymptotic carrier.

In some embodiments of the methods provided herein, the subject is administered a dose of an antibiotic prior to administration of the composition. In some embodiments of the methods provided herein, the subject is administered more than one dose of the antibiotic prior to administration of the composition. In some embodiments of the methods provided herein, the subject has not been administered an antibiotic prior to administration of the composition.

In some embodiments of the methods provided herein, the composition is administered to the subject by oral administration. In some embodiments of the methods provided herein, the composition is administered to the subject by rectal administration. In some embodiments of the methods provided herein, the administering results in proliferation and/or accumulation of regulatory T cells (Tregs).

Each of the limitations of the invention can encompass various embodiments of the invention. It is, therefore, anticipated that each of the limitations of the invention involving any one element or combinations of elements can be included in each aspect of the invention. This invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are not intended to be drawn to scale. The figures are illustrative only and are not required for enablement of the disclosure. For purposes of clarity, not every component may be labeled in every drawing. In the drawings:

Figure 1 shows the strains of Compositions A-D. Each entry includes the SEQ ID NO of the 16S rDNA sequence of the strain, a strain identifier, and the species with the closest known homology (can be more than one species). The bracketed roman numeral indicates the Clostridium cluster classification of each strain based on the closest species homology. Strains that are not classified in Cluster XlVa are highlighted in bold. The two non- clostridial strains (SEQ ID NO:2, closest known species Turicibacter sanguinis, and SEQ ID NO:6, closest known species Lactobacillus mucosae) do not belong to the Clostridium genus.

Figure 2 shows various Clostridium difficile infection models. Timelines indicate antibiotic type, duration of treatment, as well as exposure to C. difficile spores. The top panel shows an antibiotic cocktail treatment model in which the antibiotic cocktail is provided in the drinking water from day -10 to day -3 followed by intraperitoneal clindamycin on day -1. The middle panel shows a clindamycin IP injection model, in which clindamycin is administered by intraperitoneal injection on day -1. The bottom panel shows the

cefoperazone treatment model, in which cefoperazone is provided in the drinking water from day -12 to day -2, followed by administration of a live biotherapeutic product (LBP) on day - 1. Figure 3 shows the experimental conditions described in Example 1. The groups of mice were divided based on the antibiotic regimen received prior to administration of the indicated amount of C. difficile spores. "Abx" refers to treatment with any of the antibiotic regimens.

Figures 4A-4L show data obtained in Example 1. Figures 4A-4D show survival of mice that received no treatment (Figure 4A), antibiotic cocktail (Figure 4B), clindamycin (Figure 4C), or cefoperazone (Figure 4D) prior to C. difficile infection. Figures 4E-4H show body weight of mice that received no treatment (Figure 4E), antibiotic cocktail (Figure 4F), clindamycin (Figure 4G), or cefoperazone (Figure 4H) prior to C. difficile infection. Figures 4I-4L show C. difficile burden (CFU) per gram of feces from mice that received no treatment (Figure 41), antibiotic cocktail (Figure 4J), clindamycin (Figure 4K), or cefoperazone (Figure 4L) prior to C. difficile infection. Open circles indicate infection with 10 C. difficile spores; closed squares indicate infection with 10,000 C. difficile spores. Black triangles in Figure 4J indicate an additional experimental arm in which mice were treated with vancomycin following C. difficile infection.

Figure 5 shows experimental conditions evaluated in Example 2, the results for which are presented in Figures 7-9. Composition E corresponds to a mixture of 17 bacterial strains (See e.g., Narushima et ah, Gut Microbes 5: 3, 333-339). Composition I corresponds to a mixture of Clostridium scindens, Pseudoflavonifractor capillosus, and Blautia hansenii. "Abx" refers to treatment with any of the antibiotic regimens. Figure 6 shows survival of mice over time post infection with C. difficile spores, according to the experimental conditions shown in Figure 5. Mice losing >20% body weight of baseline were included in mortality numbers in survival curves.

Figures 7A-7I show weight of the mice at various times post infection with C. difficile spores. Groups of mice received cefoperazone (Abx) treatment followed by the indicated composition, or no cefoperazone (no Abx), then were administered C. difficile spores. Figure 7A shows weight of the mice that received no antibiotic treatment. Figure 7B shows weight of the mice that received cefoperazone treatment. Figure 7C shows weight of the mice that received cefoperazone treatment followed by vancomycin. Figure 7D shows weight of the mice that received cefoperazone treatment followed by Composition I. Figure 7E shows weight of the mice that received cefoperazone treatment followed by Composition E. Figure 7F shows weight of the mice that received cefoperazone treatment followed by composition A. Figure 7G shows weight of the mice that received cefoperazone treatment followed by composition B. Figure 7H shows weight of the mice that received cefoperazone treatment followed by composition C. Figure 71 shows weight of the mice that received cefoperazone treatment followed by composition D.

Figures 8A-8C show the load of C. difficile in colony forming units (CFUs) in fecal pellets at various times post infection with C. difficile. Figure 8 A shows C. difficile CFU/g feces one-day post infection. Figure 8B shows C. difficile CFU/g feces 3 days post infection. Figure 8C shows C. difficile CFU/g feces 8 days post infection.

Figure 9 shows experimental conditions evaluated in Example 3, the results for which are presented in Figures 10-12.

Figure 10 shows survival of the mice over time post infection with C. difficile spores, according to the experimental conditions shown in Figure 9. Mice losing >20% body weight of baseline were included in mortality numbers in survival curves.

Figure 11 shows weight of the mice at various times post infection with C. difficile spores.

Figure 12 shows the C. difficile burden in colony forming units (CFUs) in fecal pellets collected from mice 1, 3, and 8 days post infection with C. difficile.

Figure 13 shows the strains of Composition F. The genus-species notation indicates the closest species based on the sequence of the isolated strain.

Figure 14 shows the classification by Clostridium cluster of the strains in

Composition F and their short-chain fatty acid producing abilities. Figure 15 shows experimental conditions evaluated in Example 4, the results for which are presented in Figures 16-18. The dosing days are relative to C. difficile infection. FMT refers to Fecal Matter Transplant with fecal matter isolated from mice or from humans. Figures 16 shows survival of the mice over time post infection with C. difficile spores, according to the experimental conditions shown in Figure 15. Mice losing >20% body weight of baseline were included in mortality numbers in survival curves.

Figures 17A-17H show weight of the mice at various times post infection with C. difficile spores. Groups of mice received cefoperazone (Abx) treatment followed by the indicated composition, then were administered C. difficile spores. Figure 17A shows weight of the mice that received cefoperazone treatment. Figure 17B shows weight of the mice that received cefoperazone treatment followed by FMT with fecal matter from a human. Figure 17C shows weight of the mice that received cefoperazone treatment followed by FMT with fecal matter from a mouse. Figure 17D shows weight of the mice that received cefoperazone treatment followed by Composition B on day -1. Figure 17E shows weight of the mice that received cefoperazone treatment followed by Composition B on days -2 and -1. Figure 17F shows weight of the mice that received cefoperazone treatment followed by Composition B on days -2, -1, 1, 2, and 3. Figure 17G shows weight of the mice that received cefoperazone treatment followed by Composition F on day -1. Figure 17H shows weight of the mice that received cefoperazone treatment followed by Composition F on days -2, -1, 1, 2, and 3.

Figures 18A-18B show the load of C. difficile in colony forming units (CFUs) in fecal pellets at various times post infection with C. difficile. Figure 18A shows C. difficile CFU/g feces 8 days post infection. Figure 18B shows C. difficile CFU/g feces 17 days post infection.

Figure 19 shows the strains of Composition G. The genus-species notation indicates the closest species based on the sequence of the isolated strain.

Figure 20 shows experimental conditions evaluated in Example 5, the results for which are presented in Figures 21-23. Composition B l = Composition B with Bacteroides; Composition B2 = Composition B with Bacteroides but without Flavonifractor plautii. Figure 21 shows survival of the mice over time post infection with C. difficile spores, according to the experimental conditions shown in Figure 20. Mice losing >20% body weight of baseline were included in mortality numbers in survival curves. Figures 22A-22J show weight of the mice at various times post infection with C. difficile spores. Figure 22A shows weight of the mice that received vehicle control. Figure 22B shows weight of the mice that received Composition F. Figure 22C shows weight of the mice that received Composition G. Figure 22D shows weight of the mice that received cefoperazone treatment followed by Composition B. Figure 22E shows weight of the mice that received cefoperazone treatment followed by Composition B2 (= Composition B without Flavonifr actor plautii and with added Bacteroides). Figure 22F shows weight of the mice that received cefoperazone treatment followed by Composition B 1 (= Composition B with Bacteroides added). Figure 22G shows weight of the mice that received cefoperazone treatment followed by frozen Composition B. Figure 22H shows weight of the mice that received cefoperazone treatment followed by ethanol treated human fecal samples. Figure 221 shows weight of the mice that received cefoperazone treatment followed by ethanol treated Composition B. Figure 22J shows weight of the mice that received cefoperazone treatment followed by Composition J. Figure 23 shows the load of C. difficile in colony forming units (CFUs) in fecal pellets at various times post infection with C. difficile.

Figure 24 shows weight of the indicated groups of mice at various times post infection with C. difficile spores.

Figure 25 shows experimental conditions evaluated in Example 6, the results of which are presented in Figures 27-29.

Figure 26 shows the strains in Composition H (SEQ ID NO: 14 - VE202-13 - Anaerotruncus colihominis (Cluster IV); SEQ ID NO: 16 - VE202-16 - Clostridium symbiosum (Cluster XIV a); SEQ ID NO:21 - 189 - Clostridium innocuum (Cluster XVII); SEQ ID NO:82 - PE9 - Clostridium disporicum (Cluster I); SEQ ID NO:81 - PE5 - Clostridium bolteae (Cluster XlVa); SEQ ID NO:80 - VE202-18 - Erysipelatoclostridium ramosum (Cluster XVIII). Figures 27 A and 27B shows survival and weight loss of the mice over time post infection with C. difficile spores, according to the experimental conditions shown in Figure 25. Mice losing >20% body weight of baseline were included in mortality numbers in survival curves. Figure 29A shows survival/mortality of mice that received the indicated treatment prior to C. difficile infection. Figure 29B shows the weight over time of mice that received the indicated treatment prior to C. difficile infection.

Figures 28A and 28B show results from the experimental conditions shown in Figure 25. Figure 28 A shows survival/mortality of mice that received the indicated treatment prior to C. difficile infection. Figure 28B shows the weight over time of mice that received the indicated treatment prior to C. difficile infection.

Figures 29A and 29B show the C. difficile burden in CFU/gram feces collected from mice that received the indicated treatment prior to C. difficile. Figure 29A shows C. difficile burden at one-day post C. difficile infection. Figure 29B shows C. difficile burden at 4 days post C. difficile infection. Figure 29C shows C. difficile burden at 19 days post C. difficile infection.

Figure 30 shows that Composition B reduced the amount of C. difficile Toxin B compared to no treatment controls: "2-1 (Cdiff)" and "2-4 (Cdiff)" and FMT. In addition, Composition B reduced the amount of C. difficile Toxin B compared to Composition B with additional spores.

Figure 31 shows Composition B reduced C. difficile growth in in vitro competition experiments. Cultures of C. difficile were incubated in the presence of B. thetaiotaomicron, C. bifermentans, or Composition B, or in the absence of a competing strain(s) (C. diff only). The quantity of C. difficile is presented as the percentage of the control (C. diff only).

Figure 32 shows that inoculation with Composition B induced the percentage of FoxP3+ CD4+ cells (regulatory T cells) in the intestine of germ-free mice as compared to control mice ("GF"). DETAILED DESCRIPTION OF THE INVENTION

Disclosed herein are compositions comprising purified bacterial strains and pharmaceutical compositions and food products containing such compositions and bacterial strains. Also disclosed are methods of treating a pathogenic infection, such as Clostridium difficile (C. difficile) infection, in a subject by administering said compositions to the subject.

Various factors including antibiotic usage can induce dysbiosis of the gastrointestinal tract, which may allow for colonization by pathogenic microorganisms, such as C. difficile. Such colonization or pathogenic infection can lead to a variety of adverse effects in the subject including diarrhea, which is one of the primary symptoms characteristic of C. difficile infection (CDI). In the case of CDI, diarrhea is thought to be a result of C. difficile production of Toxin B (also referred to as cytotoxin TcdB), which results in opening of the tight junctions between intestinal epithelial cells, increasing vascular permeability, hemorrhage, and inflammation.

The compositions described herein are effective in the treatment of C. difficile infection. As shown herein, the disclosed compositions are effective in suppressing the pathogenic effects of C. difficile infection. The compositions provided herein reduce the amount of C. difficile after infection and thereby provide an effective method for eliminating C. difficile from the body (e.g., the gut). The compositions provided herein induce the proliferation and/or accumulation of regulatory T cells (Tregs), for example when

administered to a subject. Remarkably, the compositions disclosed herein have been found to reduce or inhibit production or activity of C. difficile Toxin B and thereby represent effective compositions for the treatment or prevention of CDI. The compositions disclosed herein have also been found to inhibit the growth and/or survival of C. difficile.

The present disclosure provides compositions comprising purified bacterial strains that can be administered to subjects experiencing or having experienced a pathogenic infection to treat the infection. In some embodiments, the compositions may be administered to subjects who may be at risk for a pathogenic infection. Such subjects include subjects who previously had pathogenic infections, subjects who have been treated with antibiotics and subjects who will undergo a procedure that will put them at an increased risk for a pathogenic infection (e.g., surgery and/or hospitalization). In some embodiments, the pathogenic infection, is infection by a pathogen that is present predominantly in the gut or the intestine. In some embodiments, the pathogen that is present predominantly in the gut or the intestine is Clostridium difficile. In some embodiments, the one or more of the bacterial strains of the compositions provided herein colonize or recolonize the intestinal tract or parts of the intestinal tract (e.g., the colon or the cecum) of the subject. Such colonization or recolonization may also be referred to as grafting. In some embodiments, the one or more of the bacterial strains of the compositions recolonize the intestinal tract (e.g., the colon or the cecum) of the subject after the naturally present microbiome has been partially or completely removed, e.g., because of administration of antibiotics. In some embodiments, the one or more of the bacterial strains of the compositions colonize a dysbiotic gastrointestinal tract.

In some embodiments, the one or more of the bacterial strains of the compositions can "outgrow" a pathogen, such as C. difficile. Thus, in some embodiments, if a pathogen (e.g., C. difficile) and one or more bacteria of compositions provided herein are both present in the intestinal tract (e.g., the colon or the cecum), the one or more bacteria of compositions provided herein grow faster (e.g., have a shorter doubling time) than the pathogen, thereby preventing the pathogen from accumulating in the intestinal tract (e.g., the colon or the cecum). In some embodiments, the faster growth results because the one or more bacteria of the compositions provided herein are better at grafting in the intestinal tract (e.g., the colon or the cecum). In some embodiments, the faster growth results because the one or more bacteria of the compositions provided herein are better at metabolizing nutrients present in the intestinal tract (e.g., the colon or the cecum). In some embodiments, the compositions of bacterial strains provided herein prevent or inhibit production of bacterial toxins by the pathogenic infection, or prevent or inhibit the cytopathic or cytotoxic effects of such bacterial toxins. In some embodiments, the bacterial strains of the compositions provided herein can treat pathogenic infections, because of the synergy between the bacterial strains. Thus, without being limiting, in some embodiments, the combination of the bacterial strains of the compositions provided herein act synergistically because the combination of the strains is particularly well-suited to use nutrients in the intestinal tract (e.g., the colon or the cecum), or instance through metabolic interactions, and/or because the combination is superior in grafting (e.g., by providing a favorable microenvironment).

In some embodiments, a pathogenic infection such as C. difficile is treated because the combination of bacterial strains of the compositions provided herein is superior in the use of nutrients when compared to the pathogen such as C. difficile, thereby suppressing the growth of the pathogen such as C. difficile. In some embodiments, a pathogenic infection such as C. difficile is treated because the combination of bacterial strains of the compositions provided herein is superior in grafting when compared to the pathogen such as C. difficile, thereby suppressing the growth of the pathogen such as C. difficile. In some embodiments, a pathogenic infection such as C. difficile is treated because the combination of bacterial strains of the compositions provided herein is superior in the use of nutrients and in grafting when compared to the pathogen such as C. difficile, thereby suppressing the growth of the pathogen such as C. difficile. In some embodiments, a pathogenic infection such as C. difficile is treated because the combination of bacterial strains of the compositions provided herein inhibits the growth and/or survival of the pathogen such as C. difficile. In some

embodiments, a pathogenic infection such as C. difficile is treated because the combination of bacterial strains of the compositions provided herein induces regulatory T cells (Tregs) in the subject that results in reduction or elimination of the pathogen such as C. difficile. In some embodiments, a pathogenic infection such as C. difficile is treated because the combination of bacterial strains of the compositions provided herein inhibits the growth and/or survival of the pathogen and induces regulatory T cells (Tregs) in the subject that results in reduction or elimination of the pathogen such as C. difficile.

In some embodiments, the synergistic effect is provided by the capacity of the combination to colonize specific niches in the intestinal tract {e.g., the colon or the cecum). In some embodiments, the synergistic effect is provided by the capacity of the combination to metabolize specific nutrients. In some embodiments, the synergistic effect is provided by the capacity of the combination to provide specific metabolites to the environment. Such specific metabolites may suppress growth of the pathogen and/or stimulate growth of non-pathogens. In some embodiments, the synergistic effect is provided by the capacity of the combination to provide short-chain fatty acids to the environment. In some embodiments, the synergistic effect is provided by the capacity of the combination to provide specific short-chain fatty acids to the environment. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce butyrate. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce acetate. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce lactate. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce propionate. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce succinate. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce multiple metabolites. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce multiple short-chain fatty acids. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce both butyrate and acetate. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce both butyrate and lactate. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce both butyrate and propionate. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce both butyrate and succinate. In some embodiments, the synergistic effect is provided by the capacity of the combination to produce butyrate, acetate and additional short-chain fatty acids.

The bacterial strains used in the compositions provided herein generally are isolated from the microbiome of healthy individuals. In some embodiments, the compositions include strains originating from a single individual. In some embodiments, the compositions include strains originating from multiple individuals. In some embodiments, the bacterial strains are obtained from multiple individuals, isolated and grown up individually. The bacterial compositions that are grown up individually may subsequently be combined to provide the compositions of the disclosure. It should be appreciated that the origin of the bacterial strains of the compositions provided herein is not limited to the human microbiome from a healthy individual. In some embodiments, the bacterial strains originate from a human with a microbiome in dysbiosis. In some embodiments, the bacterial strains originate from non- human animals or the environment (e.g., soil or surface water). In some embodiments, the combinations of bacterial strains provided herein originate from multiple sources (e.g., human and non-human animals).

In some embodiments, the bacteria of the compositions provided herein are anaerobic bacteria. In some embodiments, the bacteria of the compositions provided herein are obligate anaerobic bacteria. In some embodiments, the bacteria of the compositions provided herein are Clostridia. Clostridia may be classified into phylogenetic clusters with other closely related strains and species. (See e.g., Rajilic-Stojanovic, M., and de Vos, W.M. FEMS Microbiol Rev 38, (2014) 996-1047). In general, Clostridia are classified as belonging to a specific cluster based on their 16S rRNA (or 16S rDNA) nucleic acid sequence. Methods for determining the identity of specific bacterial species based on their 16S rRNA (or 16S rDNA) nucleic acid sequence are well known in the art (See e.g., Jumpstart Consortium Human Microbiome Project Data Generation Working, G. PLoS One (2012) 7, e39315).

Provided herein are compositions comprising bacterial strains belonging to specific

Clostridium clusters that have been found to be effective in treating and/or preventing pathogenic infection (e.g., C. difficile infection). In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster IV. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster XlVa. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster XVII. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster I. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster IX. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster XlVa and at least one of the bacterial strains belongs to Clostridium cluster XVII. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster IV and at least one of the bacterial strains belongs to Clostridium cluster XVII. In some embodiments, at least one of the bacterial strains of the composition belongs to

Clostridium cluster IV, at least one of the bacterial strains belongs to Clostridium cluster XlVa, and at least one of the bacterial strains belongs to Clostridium cluster XVII.

In some embodiments, the compositon has at least twice as many bacterial strains that belong to Clostridium cluster XlVa when compared to the bacterial strains that belong to Clostridium cluster IV. In some embodiments, at least two of the bacterial strains of the composition belong to Clostridium cluster IV and at least five of the bacterial strains belong to Clostridium cluster XlVa. In some embodiments, the compositon has at least twice as many bacterial strains that belong to Clostridium cluster XlVa when compared to the bacterial strains that belong to Clostridium cluster IV, and the composition has at least one strain that belongs to Clostridium cluster XVII. In some embodiments, at least two of the bacterial strains of the composition belong to Clostridium cluster IV, at least five of the bacterial strains belongs to Clostridium cluster XlVa, and at least one of the bacterial strains belongs to Clostridium cluster XVII.

In some embodiments, the compositions provided herein do not include bacterial strains belonging to Clostridium cluster XVIII. In some embodiments, the compositions provided herein do not include bacterial strains belonging to Clostridium cluster XVI. In some embodiments, the compositions provided herein do not include bacterial strains belonging to Clostridium cluster XI. In some embodiments, the compositions provided herein do not include bacterial strains belonging to Clostridium cluster I.

In one aspect, the disclosure provides bacterial strains comprising a 16S rDNA sequence with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 1- 83 and 124-159. It should be appreciated that SEQ ID NOs: 1-83 and 124-159 may include both full length and partial 16S rDNA sequences.

In one aspect, the disclosure provides compositions comprising a bacterial strain comprising a 16S rDNA sequence with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 1-83 and 124-159. In one aspect, the disclosure provides compositions comprising as an active ingredient a bacterial strain comprising a 16S rDNA sequence with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 1- 83 and 124-159. It should be appreciated that for all compositions provided herein, in some embodiments, the bacterial strain or the bacterial strains are the active ingredient of the composition.

It should be appreciated that for all compositions provided herein, in some embodiments, the bacterial strains are purified. Thus, for example the disclosure provides purified bacterial strains comprising a 16S rDNA sequence with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 1-83 and 124-159. In addition, for example, the disclosure provides compositions comprising purified bacterial strains comprising a 16S rDNA sequence with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 1-83 and 124-159. The bacterial strains disclosed herein originally may have been obtained and purified from the microbiota of one or more human individuals or obtained from sources other than the human microbiota, including soil and non-human microbiota. As provided herein, in some embodiments, bacteria isolated from the human microbiota, non-human microbiota, soil, or any alternative source are purified prior to use in the compositions and methods provided herein.

In one aspect, the disclosure provides compositions comprising one or more bacterial strains, wherein the one or more bacterial strains comprise a 16S rDNA sequence with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 1-83 and 124-159. In one aspect, the disclosure provides compositions comprising one or more bacterial strains wherein the one or more bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: l- 83 and 124-159. As discussed previously, in some embodiments, the bacterial strains are purified. Thus, in one aspect, the disclosure provides compositions comprising one or more purified bacterial strains wherein the one or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 1-83 and 124-159.

In one aspect, the disclosure provides compositions comprising two or more purified bacterial strains wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 1-83 and 124-159. As discussed above, in some embodiments, the bacterial strains are the active ingredient of the composition. Thus, in some embodiments, the disclosure provides compositions comprising as an active ingredient two or more purified bacterial strains wherein the two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: l-83 and 124-159.

In one aspect, the disclosure provides bacterial strains and combinations of bacterial strains that are homologous or have a high percent of homology with bacterial strains comprising 16S rDNA sequences selected from the group consisting of SEQ ID NOs: l-83 and 124-159. As discussed previously, in some embodiments, the bacterial strains are purified. The bacterial strains disclosed herein that have a 16S rDNA sequence with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: l-83 and 124-159 have a high percent of homology (e.g., greater than 90%) with 16S rDNA sequences of bacterial strains that have been described in various databases (See e.g., the National Center for Biotechnology Information). Table 1 and Table 3 provides the closest known species by homology when the 16S rDNA sequences comprising SEQ ID NOs: l-83 and 124-159 are compared to 16S rDNA sequences of bacterial species available in public databases. By way of example, the bacterial strain comprising a 16S rDNA sequence with SEQ ID NO: l (also referred to herein as "Strain 71") disclosed herein has the highest homology with a bacterial strain of the species Blautia wexlerae as defined by Accession # NR_044054 (having 16S rDNA sequence SEQ ID NO:94). While the bacterial strain with SEQ ID NO: l has homology with other published bacterial strains as well, the highest homology is with a bacterial strain of the species Blautia wexlerae as defined by Accession # NR_044054. In this particular example the homology of SEQ ID NO: l is 96.6% with SEQ ID NO:94 (corresponding to Blautia wexlerae). It should be appreciated that multiple bacterial strains disclosed herein may have the highest homology with the same species, (e.g., both SEQ ID NO:4 and SEQ ID NO:5 have the highest homology with a 16S rDNA sequence of a strain of the species Blautia hansenii).

It should further be appreciated that the bacterial strains disclosed herein that have a 16S rDNA sequence with a nucleic acid sequence selected from the group consisting of SEQ ID NOs: l-83 and 124-159, are also homologous to other strains based on their whole genome sequence, or subset of their whole genome sequence. Homologies based on whole genome analysis are provided in Table 2 and Table 3.

In one aspect, the disclosure provides compositions comprising one or more bacterial strains wherein the one or more bacterial strains are of species selected from the group consisting of Clostridium hathewayi, Blautia hansenii, Blautia producta, Blautia producta ATCC 27340, Clostridium bacterium UC5.1-1D4, Blautia coccoides, Eubacterium contortum, Eubacterium fissicatena, Sellimona intestinalis, Dracourtella massiliensis, Dracourtella massiliensis GDI, Ruminococcus torques, Anaerostipes caccae, Clostridium scindens, Marvinbryanta formatexigens , Eisenbergiella tayi, Flavinofractor plautii, Clostridium orbiscindens 1_3_50AFAA, Lachnospiraceae bacterium 7_1_58FAA,

Subdoligranulum, Anaerotruncus colihominis, Anaerotruncus colihominis DSM 17241, Clostridium symbiosum, Clostridium symbiosum WAL-14163, Clostridium bolteae,

Clostrdium bolteae 90A9, Dorea longicatena, Dorea longicatena CAG:42, Clostridium innocuum, Erysipelotrichaceae_bacterium_21-3, Blautia wexlerae, Clostridium disporicum, Erysipelatoclostridium ramosum, Pseudo flavinofractor capillosus, Turicibacter sanguinis, Lactobacillus mucosae, Ruminococcus obeum, Megasphaera elsdenii, Acidaminococcus fermentans, Acidaminococcus intestine, Ruminococcus faecis , Bacteroides cellulosilyticus, Anaerostipes hadrus, Eubacterium rectale, Ruminococcus champanellensis, Ruminococcus albus, Bifidobacterium bifidum, Blautia luti, Roseburia faecis, Fusicatenibacter

saccharivorans, Roseburia faecis, Blautia faecis, Dorea formicigenerans and Bacteroides ovatus.

In some embodiments, the disclosure provides compositions comprising two or more bacterial strains, wherein the two or more bacterial strains are of species selected from the group consisting of Clostridium hathewayi, Blautia hansenii, Blautia producta, Blautia producta ATCC 27340, Clostridium bacterium UC5.1-1D4, Blautia coccoides, Eubacterium contortum, Eubacterium fissicatena, Sellimona intestinalis, Dracourtella massiliensis, Dracourtella massiliensis GDI, Ruminococcus torques, Anaerostipes caccae, Clostridium scindens, Marvinbryanta formatexigens, Eisenbergiella tayi, Flavinofractor plautii, Clostridium orbiscindens 1_3_50AFAA, Lachnospiraceae bacterium 7_1_58FAA,

Subdoligranulum, Anaerotruncus colihominis, Anaerotruncus colihominis DSM 17241 , Clostridium symbiosum, Clostridium symbiosum WAL-14163, Clostridium bolteae,

Clostrdium bolteae 90A9, Dorea longicatena, Dorea longicatena CAG:42, Clostridium innocuum, Erysipelotrichaceae_bacterium_21-3, Blautia wexlerae, Clostridium disporicum, Erysipelatoclostridium ramosum, Pseudoflavinofr actor capillosus, Turicibacter sanguinis, Lactobacillus mucosae, Ruminococcus obeum, Megasphaera elsdenii, Acidaminococcus fermentans, Acidaminococcus intestine, Ruminococcus faecis , Bacteroides cellulosilyticus, Anaerostipes hadrus, Eubacterium rectale, Ruminococcus champanellensis, Ruminococcus albus, Bifidobacterium bifidum, Blautia luti, Roseburia faecis, Fusicatenibacter saccharivorans , Roseburiafaecis, Blautia faecis, Dorea formicigenerans and Bacteroides ovatus.

It should be appreciated that the compositions may include multiple strains of a particular species. Thus, for illustration, a non-limiting example of the compositions disclosed herein, comprises one strain of Clostridium hathewayi and two strains of Blautia hansenii.

The invention also encompasses compositions comprising bacterial strains that are close in homology to and/or fall within the species Clostridium hathewayi, Blautia hansenii, Blautia producta, Blautia producta ATCC 27340, Clostridia bacteria UC5.1-1D4, Blautia coccoides, Eubacterium contortum, Eubacterium fissicatena, Sellimona intestinalis,

Dracourtella massiliensis, Dracourtella massiliensis GDI, Ruminococcus torques,

Anaerostipes caccae, Clostridium scindens, Marvinbryanta formatexigens, Eisenbergiella tayi, Flavinofractor plautii, Clostridium orbiscindens 1_3_50AFAA, Lachnospiraceae bacterium 7_1_58FAA, Subdoligranulum, Anaerotruncus colihominis, Anaerotruncus colihominis DSM 17241, Clostridium symbiosum, Clostridium symbiosum WAL-14163, Clostridium bolteae, Clostrdium bolteae 90A9, Dorea longicatena, Dorea longicatena CAG:42, Clostridium innocuum, Erysipelotrichaceae_bacterium_21-3, Blautia wexlerae, Clostridium disporicum, Erysipelatoclostridium ramosum, Pseudoflavinofr actor capillosus, Turicibacter sanguinis, Lactobacillus mucosae, Ruminococcus obeum, Megasphaera elsdenii, Acidaminococcus fermentans, Acidaminococcus intestine, Ruminococcus faecis, Bacteroides cellulosilyticus, Anaerostipes hadrus, Eubacterium rectale, Ruminococcus champanellensis , Ruminococcus albus, Bifidobacterium bifidum, Blautia luti, Roseburia faecis, Fusicatenibacter saccharivorans, Roseburiafaecis, Blautia faecis , Dorea

formicigenerans and Bacteroides ovatus. Thus, in one embodiment, the compositions of the disclosure include one or more bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 84-123. In some embodiments, the compositions of the disclosure include two or more bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 84- 123.

In one aspect, the compositions of the disclosure include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 1-23 and 124-159. In some embodiments, the compositions of the disclosure include two or more bacterial strains of species selected from the group consisting of Clostridium hathewayi, Blautia hansenii, Blautia producta, Blautia producta ATCC 27340, Clostridia bacteria UC5.1-1D4, Blautia coccoides, Eubacterium contortum, Eubacterium fissicatena, Sellimona intestinalis,

Dracourtella massiliensis, Dracourtella massiliensis GDI, Ruminococcus torques,

Anaerostipes caccae, Clostridium scindens, Marvinbryanta formatexigens, Eisenbergiella tayi, Flavinofractor plautii, Clostridium orbiscindens 1_3_50AFAA, Lachnospiraceae bacterium 7_1_58FAA, Subdoligranulum, Anaerotruncus colihominis, Anaerotruncus colihominis DSM 17241, Clostridium symbiosum, Clostridium symbiosum WAL-14163, Clostridium bolteae, Clostrdium bolteae 90A9, Dorea longicatena, Dorea longicatena CAG:42, Clostridium innocuum, Erysipelotrichaceae_bacterium_21-3, Blautia wexlerae, Turicibacter sanguinis, Lactobacillus mucosae, and Bacteroides ovatus. In some

embodiments, the compositions of the disclosure include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:88, SEQ ID NO:89, SEQ ID NO:90, SEQ ID NO:91, SEQ ID NO:93, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, SEQ ID NO: 102, SEQ ID NO: 103, SEQ ID NO: 105, SEQ ID NO: 106, SEQ ID NO: 108, SEQ ID NO: 109, SEQ ID NO: 110, SEQ ID NO: 121, and SEQ ID NO: 122.

In one aspect, the disclosure provides Composition A (See e.g., Figure 1, Table A). As shown in Figure 1, Composition A contains bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences: SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the disclosure provides compositions with two or more purified bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the disclosure provides compositions with five or more purified bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the disclosure provides compositions with at least ten purified bacterial strains, wherein the bacterial strains comprise 16S rDNA sequences with nucleic acid sequences SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23, respectively. In some embodiments, the disclosure provides a composition consisting of ten purified bacterial strains, wherein the bacterial strains comprise 16S rDNA sequences with nucleic acid sequences SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23, respectively. In some embodiments, the disclosure provides a composition essentially consisting of ten purified bacterial strains, wherein the bacterial strains comprise 16S rDNA sequences with nucleic acid sequences SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23, respectively. As used herein, essentially consisting of refers to a composition that includes no additional bacterial strains.

In some embodiments, the disclosure provides compositions with bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of: SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the disclosure provides compositions with two or more purified bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the disclosure provides compositions with five or more purified bacterial strains that comprise 16S rDNA having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the disclosure provides compositions with at least ten purified bacterial strains, wherein the bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7,

SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23, respectively. In some embodiments, the disclosure provides a composition consisting of ten purified bacterial strains, wherein the bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23, respectively. In some embodiments, the disclosure provides a composition essentially consisting of ten purified bacterial strains, wherein the bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23, respectively.

The bacterial strains in Composition A are related to the following bacterial species: Clostridium hathewayi, Blautia hansenii, Blautia producta, Blautia coccoides, Eubacterium contortum, Eubacterium fissicatena, Anaerostipes caccae, Clostridium scindens,

Marvinbryanta formatexigens, and Eisenbergiella tayi (See e.g., Table 1). It should be appreciated that multiple bacterial strains of the compositions disclosed herein can have the same related bacterial species. For instance, the bacterial strains having 16S rDNA sequences with nucleic acid sequences SEQ ID NO:4, SEQ ID NO:5 and SEQ ID NO:7 all have Blautia hansenii as related species. In some embodiments, the disclosure provides compositions with two or more bacteria of species selected from the group consisting of Clostridium hathewayi, Blautia hansenii, Blautia producta, Blautia coccoides, Eubacterium contortum, Eubacterium fissicatena, Anaerostipes caccae, Clostridium scindens,

Marvinbryanta formatexigens, and Eisenbergiella tayi. In some embodiments, the disclosure provides compositions with two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:88, SEQ ID NO:89, SEQ ID NO:99, SEQ ID NO: 103, SEQ ID NO: 105, SEQ ID NO: 106, SEQ ID NO: 108, SEQ ID NO: 109, and SEQ ID NO: 121.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:7, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23. In some

embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5; SEQ ID NO:7, SEQ ID NO:8, and SEQ ID NO: 13.

Each of the bacterial strains of Composition A are BaiCD+, meaning that the bacterial strains encode, or are predicted to encode, the bile inducible operon gene BaiCD and/or a protein with stereospecific NAD(H)-dependent 3-oxo-A ⁴ -cholenoic acid oxidoreductase activity. The BaiCD status of a bacterial strain can be determined for instance by PCR (See e.g., Wells et al. Clin Chim Acta (2003) May; 331(1-2): 127-34). Furthermore, each of the strains of Composition A are classified as belonging to Clostridium cluster XlVa. In some embodiments, the disclosure provides compositions comprising two or more bacterial strains, wherein the bacterial strains are BaiCD+ strains. In some embodiments, the disclosure provides compositions comprising two or more bacterial strains, wherein the bacterial strains are BaiCD+ and belong to Clostridium cluster XlVa. In some embodiments of the compositions comprising two or more bacterial strains that are BaiCD+ strains and that belong to Clostridium cluster XlVa, the compositions do not include bacterial strains that belong to Clostridium cluster IV.

In some embodiments, the disclosure provides compositions with two or more purified bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, and SEQ ID NO:23, wherein all the bacterial strains belong to Clostridium cluster XlVa.

*= BaiCD ⁺

In one aspect, the disclosure provides Composition B (See e.g., Figure 1, Table B). As shown in Figure 1, Composition B contains bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences: SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21 , and SEQ ID NOs: 124-159. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124- 159. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159, respectively. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21, respectively. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, respectively. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159, respectively. In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21, respectively. In some embodiments, the composition consists of eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, respectively. In some embodiments, the compositions consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124- 159, respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21, respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124- 159, respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the compositions include eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159, respectively. In some embodiments, the compositions include eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21, respectively. In some embodiments, the compositions include eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, respectively. In some embodiments, the compositions include eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID

NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the composition consists of eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159, respectively. In some embodiments, the composition consists of eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21, respectively. In some embodiments, the composition consists of eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, respectively. In some embodiments, the compositions consists of eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the composition essentially consists of eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159, respectively. In some embodiments, the composition essentially consists of eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21, respectively. In some embodiments, the composition essentially consists of eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, respectively. In some embodiments, the composition essentially consists of eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157.

In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences: SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NOs: 124-159. In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences: SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22. In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences: SEQ ID NOs: 124-159. In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences: SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22. In some

embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO:22, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157.

In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 22, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159, respectively. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22,

respectively. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO:22, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159. . In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159, respectively. In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22, respectively. In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 22, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159. In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID

NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159, respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22, respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 22, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In one aspect, the disclosure provides compositions that contain bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of: SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO: 124-159. In one aspect, the disclosure provides compositions that contain bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences: SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In one aspect, the disclosure provides compositions that contain bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of: SEQ ID NOs: 124-159. In one aspect, the disclosure provides compositions that contain bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID

NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159. In some

embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159. In some

embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO: 124-159, respectively. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21, respectively. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NOs: 124-159, respectively. In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21,

respectively. In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124- 159, respectively. In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO: 124-159, respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID

NO:21, respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences : SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159. In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences: SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22. In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences: SEQ ID NO:22, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159.

In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NO: 124-145, and SEQ ID NOs: 152-159. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 22, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159.

In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 20, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159.

In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159, respectively. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22, respectively. In some embodiments, the compositions include at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 22, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159.

In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159, respectively. In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22, respectively. In some embodiments, the composition consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 22, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159.

In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID

NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO: 124-145, and SEQ ID NOs: 152-159, respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22,

respectively. In some embodiments, the composition essentially consists of at least eight purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 22, SEQ ID NO: 124-145, and SEQ ID NOs: 152- 159.

In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences: SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NO: 124-159. In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences: SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:22. In one aspect, the disclosure provides a composition that contains bacterial strains that comprise 16S rDNA sequences with nucleic acid sequences: SEQ ID NO: 18, SEQ ID NO:22, and SEQ ID NO: 124-159.

In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NO: 124-159. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:22. In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:22, and SEQ ID NO: 124-159.

In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NOs: 124-159. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:22. In some embodiments, the compositions include five or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:22, and SEQ ID NOs: 124-159.

In some embodiments, the compositions include at least ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NOs: 124-159, respectively. In some embodiments, the compositions include at least ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:22, respectively. In some embodiments, the compositions include at least ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO: 22, and SEQ ID NOs: 124-159.

In some embodiments, the composition consists of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NO: 124-159, respectively. In some embodiments, the composition consists of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:22, respectively. In some embodiments, the composition consists of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:22, SEQ ID NOs: 124-159, respectively.

In some embodiments, the composition essentially consists of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NO: 124-159, respectively. In some embodiments, the composition essentially consists of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:22, respectively. In some embodiments, the composition essentially consists of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:22, and SEQ ID NO: 124-159, respectively.

The bacterial strains in Composition B are related to the following bacterial species:

Flavinofractor plautii, Lachnospiraceae, bacterium 7_1_58FAA, Subdoligranulum

Anaerotruncus colihominis, Eubacterium fissicatena, Ruminococcus torques Clostridium symbiosum, Clostridium bolteae, Dorea longicatena, Blautia producta, Clostridium innocuum, and Erysipelotrichaceae_bacterium_21-3 (See e.g., Table 2).

Selected strains were subjected to whole genome sequencing using a PacBio

Biosciences platform (Menlo Park, CA) and sequences were assembled into whole genomes (Table 3). The 16S rDNA sequences were identified using Prokka and Barrnap. It was found that several strains contained more than one 16S sequence. All identified 16S rRNA gene nucleotide sequences for each strain were then clustered at 97% identity using the usearch (v 5.2.236) algorithm and the cluster seed sequence was selected as the representative sequence for each Composition B strain (The Consensus 16S sequence: column labeled "^Consensus SEQ ID # of 16S region as determined by WGS" in Table 3). Table 3 provides identification of the indicated strains included in Composition B based on Sanger sequencing of the 16S region as well as on whole genome sequencing (WGS). The closest species of the bacterial strains were identified both by comparison to a 16S database (column labeled: "Closest species based on Consensus SEQ ID # of 16S region as compared with 16S database") and to whole genome databases (column labeled: "Closest species based on WGS compared versus WG databases).

Based on identification of 16S sequences through whole genome sequencing, and by comparing these sequences with 16S databases, the bacterial strains in Composition B are related to the following bacterial species: Clostridium bolteae, Anaerotruncus colihominis, Dracourtella massiliensis, Clostridium symbiosum Blautia producta, Dorea longicatena Clostridium innocuum and Flavinofractor plautii (see, e.g., Table 3). Based on whole genome sequencing and comparing of the whole genome to whole genome databases, the bacterial strains in Composition B are most closely related to the following bacterial species: Clostridium bolteae 90A9, Anaerotruncus colihominis DSM 17241, Dracourtella massiliensis GDI, Clostridium symbiosum WAL-14163, Clostridium bacterium UC5.1-1D4, Dorea longicatena CAG:42, Erysipelotrichaceae bacterium 21_3, and Clostridium orbiscindens 1_3_50AFAA (see, e.g., Table 3).

It should be appreciated that multiple strains of the compositions disclosed herein can have the same related bacterial species. For instance, the bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO 18, SEQ ID NO:20 and SEQ ID NO:22 all have Dorea longicatena as related bacterial species. In some embodiments, the disclosure provides compositions with two or more bacteria selected from the group consisting of Flavinofractor plautii, Lachnospiraceae, bacterium 7_1_58FAA,

Subdoligranulum Anaerotruncus colihominis, Eubacterium fissicatena, Ruminococcus torques Clostridium symbiosum, Clostridium bolteae, Dorea longicatena, Blautia producta, Clostridium innocuum and Erysipelotrichaceae_bacterium_21-3. In some embodiments, the disclosure provides compositions with two or more bacteria selected from the group consisting of Flavinofractor plautii, Anaerotruncus colihominis, Eubacterium fissicatena, Clostridium symbiosum, Clostridium bolteae, Dorea longicatena, Blautia producta, and Clostridium innocuum. In some embodiments, the disclosure provides compositions that include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:93, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO: 102, SEQ ID NO: 106, SEQ ID NO: 110, and SEQ ID NO: 122.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NOs: 124-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:22. In some embodiments, the

composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152 and SEQ ID NO: 157.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NO: 124-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22. In some embodiments, the

composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:22, and SEQ ID NO: 124-159. In some

embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:22, SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO: 124-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some embodiments, the

composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18 and SEQ ID NO: 124-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NO: 124-145, and SEQ ID NO: 151-159. In some embodiments, the

composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:22, SEQ ID NO: 124-145, and SEQ ID NO: 151-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 152, and SEQ ID NO: 157

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO: 124-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, and SEQ ID NO:21. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-159.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NOs: 157-159, and SEQ ID NOs: 141-156. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:22. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:22, SEQ ID NOs: 157-159, and SEQ ID NO: 141- 156.

Each of the bacteria of Composition B are BaiCD- strains, meaning that the strains do not encode and/or are not predicted to encode the bile inducible operon gene baiCD and/or a protein with stereospecific NAD(H)-dependent 3-oxo-A ⁴ -cholenoic acid oxidoreductase activity. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the bacteria are BaiCD- strains. The strains of Composition B are classified as belonging to Clostridium clusters IV, XlVa, and XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and belong to Clostridium clusters IV, XlVa, or XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and belong to Clostridium clusters IV or XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and belong to Clostridium clusters XlVa or XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and belong to Clostridium clusters IV or XlVa. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and belong to Clostridium cluster IV. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and belong to Clostridium cluster XlVa. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and belong to Clostridium clusters XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and belong to Clostridium clusters IV, XlVa, and XVII and do not belong to Clostridium clusters XVI or XVIII.

In some embodiments, the disclosure provides two or more bacterial strains wherein the bacterial strains are spore forming bacterial strains. In some embodiments, the disclosure provides two or more bacterial strains wherein the bacteria are spore formers and wherein the bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO:21, SEQ ID NOs 124-140, and SEQ ID NO: 152-156. In some embodiments, the disclosure provides two or more bacterial strains wherein the bacteria are spore formers and wherein the bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO: 17, and SEQ ID NO:21. In some embodiments, the disclosure provides two or more bacterial strains wherein the bacteria are spore formers and wherein the bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-140, and SEQ ID NOs: 152-156.

In some embodiments, the disclosure provides two or more bacterial strains wherein the bacteria include both spore formers and non-spore formers. In some embodiments, the disclosure provides two or more bacterial strains wherein the bacteria include both spore formers and non-spore formers, and wherein the spore forming bacterial strains comprise two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO:21, SEQ ID NOs: 124-140, and SEQ ID NOs: 152-156. In some embodiments, the disclosure provides two or more bacterial strains wherein the bacteria include both spore formers and non- spore formers, and wherein the spore forming bacterial strains comprise two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO: 17, and SEQ ID NO:21. In some embodiments, the disclosure provides two or more bacterial strains wherein the bacteria include both spore formers and non-spore formers, and wherein the spore forming bacterial strains comprise two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-140 and SEQ ID NO: 152-156.

In some embodiments, the compositions include one or more bacterial species from the Bacteroides genus. In some embodiments, the compositions include one or more bacterial species selected from the group consisting of B. acidifaciens, B. caccae, B.

coprocola, B. coprosuis, B. eggerthii, B. finegoldii, B. fragilis, B. helcogenes, B. intestinalis, B. massiliensis, B. nordii, B. ovatus, B. thetaiotaomicron, B. vulgatus, B. plebeius, B. uniformis B. salyersai, B. pyogenes, B. goldsteinii, B. dorei, and B. johnsonii. In some embodiments, the compositions include Bacteroides ovatus. In some embodiments, the Bacteroides ovatus has a 16S rDNA sequence comprising SEQ ID NO:83. In some embodiments, the Bacteroides ovatus has a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence comprising SEQ ID NO:83. In some embodiments, the Bacteroides ovatus has a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence comprising SEQ ID NO: 101.

While not being limited to a specific mechanism it is thought that the inclusion of a Bacteroides species in the bacterial compositions disclosed herein increases the ability to sense and adapt to nutrient availability or influence the host immune system so that it becomes more effective in fighting pathogens (e.g., C. difficile). In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID

NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO: 124-159, and SEQ ID NO:83. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:83. (Composition B l, See e.g., Table B l). In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, and SEQ ID NO: 83.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO: 124- 145, SEQ ID NO: 152-159, and SEQ ID NO:83. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NO:83. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124- 145, SEQ ID NO: 152-159, and SEQ ID NO: 83.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO: 124- 159, and SEQ ID NO:83. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22 and SEQ ID NO:83. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-159, SEQ ID NO: 18, SEQ ID NO: 22, and SEQ ID NO: 83.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16s rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:93, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO: 101, SEQ ID NO: 102, SEQ ID NO: 106, SEQ ID NO: 110, and SEQ ID NO: 122. It should also be appreciated that in some embodiments, the com ositions disclosed herein do not include bacterial s ecies from the Bacteroides enus.

In some embodiments, the compositions disclosed herein do not include Clostridium orbiscindens 1_3_50AFAA, Flavinofractor plautii, Subdoligranulum or Lachnospiraceae bacterium 7_1_58FAA. In some embodiments, the compositions disclosed herein do not include Clostridium orbiscindens 1_3_50AFAA. In some embodiments, the compositions disclosed herein do not include Flavinofractor plautii. In some embodiments, the compositions disclosed herein do not include Subdoligranulum. In some embodiments, the compositions disclosed herein do not include Lachnospiraceae bacterium 7 _1 _58FAA. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO: 124-156, wherein the composition does not include a bacterial strain comprising a 16s rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10 and SEQ ID NOs: 157-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID

NO:21, wherein the composition does not include a bacterial strain comprising a 16s rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NOs: 124-156, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NOs: 157-159.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NOs: 124-146 and SEQ ID NO: 152-156, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10 and SEQ ID NOs: 157-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, and SEQ ID NO:22, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:22, SEQ ID NOs: 124-146, and SEQ ID NOs: 152-156, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NOs: 157-159.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, and SEQ ID NOs: 124-156, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10 and SEQ ID NOs: 157-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, and SEQ ID NO:22, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:22, and SEQ ID NOs: 124-159, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NOs: 157-159.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO: 102, SEQ ID NO: 106, SEQ ID NO: 110, and SEQ ID NO: 122, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO:93.

In some embodiments, the compositions include one or more bacterial species from the Bacteroides genus and do not include Clostridium orbiscindens 1_3_50AFAA,

Flavinofractor plautii, Subdoligranulum or Lachnospiraceae bacterium 7_1_58FAA.

(Composition B2, See e.g., Table B2). In some embodiments, the compositions include Bacteroides ovatus and do not include Clostridium orbiscindens 1_3_50AFAA,

Flavinofractor plautii, Subdoligranulum or Lachnospiraceae bacterium 7_1_58FAA.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21 SEQ ID NO:83, and SEQ ID NOs: 124-156, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10 and SEQ ID NOs: 157-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21 and SEQ ID NO:83, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:83 and SEQ ID NOs: 124-156, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NOs: 157-159.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO:83, SEQ ID NOs: 124-145, and SEQ ID NOs: 152-156, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10 and SEQ ID NOs: 157-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:21, SEQ ID NO:22 and SEQ ID NO:83, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:22 SEQ ID NO:83, SEQ ID NOs: 124-145, and SEQ ID NOs: 152- 156,, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NOs: 157- 159.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO:83,and SEQ ID NO: 124-156, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10 and SEQ ID NOs: 157-159. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22 and SEQ ID NO:83, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:22, SEQ ID NO:83,and SEQ ID NO: 124-156, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NOs: 157-159.

In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO: 101, SEQ ID NO: 102, SEQ ID NO: 106, SEQ ID NO: 110, and SEQ ID NO: 122, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO:93.

In one aspect, the disclosure provides Composition C (See e.g., Figure 1, Table C). As shown in Figure 1, Composition C contains bacteria that have the following 16S rDNA sequences: SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16. In some embodiments, the disclosure provides compositions with two or more purified bacterial strains that have 16S rDNA sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16. In some embodiments, the compositions include four or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16. In some embodiments, the compositions include at least ten purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16. In some embodiments, the composition consists of ten purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16, respectively. In some embodiments, the composition consists essentially of ten purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16, respectively.

In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16. In some embodiments, the compositions include four or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16. In some embodiments, the compositions include at least ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16. In some embodiments, the composition consists of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16, respectively. In some embodiments, the composition essentially consists of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16, respectively.

The bacterial strains in Composition C are related to the following species:

Clostridium scindens, Clostridium hathewayi, Blautia hansenii, Blautia wexlerae, Blautia producta, Blautia coccoides, Dorea longicatena, Clostridium innocuum, Flavonifr actor plautii, Lachnospiraceae bacterium 7_1_58FAA, Subdoligranulum, Anaerotruncus colihominis, and Clostridium symbiosum. In some embodiments, the disclosure provides compositions with two or more bacterial strains of species selected from the group consisting of Clostridium scindens, Clostridium hathewayi, Blautia hansenii, Blautia wexlerae, Blautia product, Blautia coccoides, Dorea longicatena, Clostridium innocuum, Flavonifractor plautii, Lachnospiraceae bacterium 7_1_58FAA, Subdoligranulum, Anaerotruncus colihominis, and Clostridium symbiosum. In some embodiments, the disclosure provides compositions that include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:93, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, SEQ ID NO: 103, SEQ ID NO: 105, SEQ ID

NO: 106, and SEQ ID NO: 122.

In some embodiments, the compositions disclosed herein do not include

Flavinofractor plautii, Subdoligranulum or Lachnospiraceae bacterium 7_1_58FAA. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO:7, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 14, and SEQ ID NO: 16, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, SEQ ID NO: 103, SEQ ID NO: 105, SEQ ID

NO: 106, and SEQ ID NO: 122, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO:93.

The strains of Composition C include both BaiCD ⁺ strains and Bai CD- strains. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein one or more bacteria are BaiCD+ strains and one or more bacteria are BaiCD- strains. In some embodiments of the one or more bacteria that are BaiCD+ strains are selected from bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, and SEQ ID NO:7. In some embodiments the one or more bacteria that are BaiCD- strains are selected from bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO: 14, and SEQ ID NO: 16. In some embodiments of the one or more bacteria that are BaiCD+ strains are selected from the bacterial species Clostridium scindens, Clostridium hathewayi, Blautia hansenii, Blautia wexlerae, Blautia product, and Blautia coccoides. In some embodiments of the one or more bacteria that are BaiCD- strains are selected from the bacterial species Dorea longicatena, Clostridium innocuum, Flavonifractor plautii, or Lachnospiraceae bacterium 7_1_58FAA, Anaerotruncus colihominis, and Clostridium symbiosum. The clostridial strains of Composition C are classified as belonging to

Clostridium clusters IV, XlVa, and XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and BaiCD+ strains and belong to Clostridium clusters IV, XlVa, or XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and BaiCD+ strains and belong to Clostridium clusters XlVa or XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and BaiCD+ strains and belong to Clostridium clusters IV or XlVa.

In one aspect, the disclosure provides Composition D (See e.g., Figure 1, Table D). As shown in Figure 1, Composition D contains bacteria that have the following 16S rDNA sequences: SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6. In some embodiments, the disclosure provides compositions with two or more purified bacterial strains that have 16S rDNA sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6. In some embodiments, the disclosure provides compositions that include three or more purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6. In some embodiments, the disclosure provides compositions that include at least ten purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6. In some embodiments, the disclosure provides a composition that consists of ten purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6, respectively. In some embodiments, the disclosure provides a composition that consists essentially of ten purified bacterial strains comprising 16S rDNA sequences with nucleic acid sequences SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6, respectively In some embodiments, the disclosure provides compositions that include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6. In some embodiments, the disclosure provides compositions that include three or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6. In some embodiments, the disclosure provides compositions that include at least ten more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6. In some embodiments, the disclosure provides a composition that consists of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6, respectively. In some embodiments, the disclosure provides a composition that consists essentially of ten purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, SEQ ID NO:2, and SEQ ID NO:6, respectively.

The bacterial strains in Composition D are related to the following bacteria:

Clostridium scindens, Clostridium hathewayi, Blautia hansenii, Blautia wexlerae,

Anaerotruncus colihominis, Dorea longicatena, Clostridium innocuum, Flavonifractor plautii, Lachnospiraceae bacterium 7_1_58FAA, Subdoligranulum, Turicibacter sanguinis, and Lactobacillus mucosae. In some embodiments, the disclosure provides compositions with two or more bacterial strains of species selected from the group consisting of

Clostridium scindens, Clostridium hathewayi, Blautia hansenii, Blautia wexlerae,

Anaerotruncus colihominis, Dorea longicatena, Clostridium innocuum,

Erysipelotrichaceae_bacterium_21-3, Flavonifractor plautii, Lachnospiraceae bacterium 7_1_58FAA, Turicibacter sanguinis, and Lactobacillus mucosae. In some embodiments, the disclosure provides compositions that include two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:90, SEQ ID NO:91, SEQ ID

NO:93, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, and SEQ ID NO: 105.

In some embodiments, the compositions disclosed herein do not include

Flavinofractor plautii, Subdoligranulum or Lachnospiraceae bacterium 7_1_58FAA. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO: l, SEQ ID NO: 14, SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO:2, and SEQ ID NO:6, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO: 10. In some embodiments, the composition comprises two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:87, SEQ ID NO:90, SEQ ID NO:91, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, and SEQ ID NO: 105, wherein the composition does not include a bacterial strain comprising a 16S rDNA sequence having at least 97% homology with a nucleic acid sequence of SEQ ID NO:93.

The strains of Composition D include both BaiCD ₊ strains and Bai CD- strains. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein one or more bacteria are BaiCD+ strains and one or more bacteria are BaiCD- strains. In some embodiments of the one or more bacteria that are BaiCD+ strains are selected from bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 12, SEQ ID NO:3, SEQ ID NO:5, and SEQ ID NO: l. In some embodiments the one or more bacteria that are BaiCD- strains are selected from bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 18, SEQ ID NO:21, SEQ ID NO: 10, and SEQ ID NO: 14. In some embodiments of the one or more bacteria that are BaiCD+ strains are selected from the bacterial species Clostridium scindens, Clostridium hathewayi, Blautia hansenii, and Blautia wexlerae. In some embodiments of the one or more bacteria that are BaiCD- strains are selected from the bacterial species Dorea longicatena, Clostridium innocuum, Flavonifractor plautii, and Anaerotruncus colihominis. The Clostridial strains of Composition D are classified as belonging to Clostridium clusters IV, XlVa, and XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and BaiCD+ strains and belong to Clostridium clusters IV, XlVa, or XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and BaiCD+ strains and belong to Clostridium clusters XlVa or XVII. In some embodiments, the disclosure provides two or more bacterial strains, wherein the bacteria are BaiCD- strains and BaiCD+ strains and belong to Clostridium clusters IV or XlVa.

Composition D includes the non-Clostridium strains Turicibacter sanguinis and Lactobacillus mucosae. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition includes both Clostridium strains and non-Clostridium strains. In some embodiments, the non-clostridium strains are the members of the genus Lactobacillus. Members of the genus Lactobacillus include, without limitation L. acetotolerans, L. acidifarinae , L. acidipiscis, L. acidophilus, L. agilis, L.

algidus, L. alimentarius, L. amylolyticus , L. amylophilus, L. amylotrophicus , L. amylovorus, L. animalis, L. antri, L. apodemi, L. aviarius, L. bifermentans, L. brevis, L. buchneri, L. camelliae, L. casei, L. catenaformis , L. ceti, L. coleohominis, L. collinoides, L. composti, L. concavus, L. coryniformis, L. crispatus, L. crustorum, L. curvatus, L. delbrueckii subsp. bulgaricus, L. delbrueckii subsp. delbrueckii, L. delbrueckii subsp. lactis, L. dextrinicus, L. diolivorans, L. equi, L. equigenerosi, L. farraginis, L. farciminis, L. fermentum, L. fornicalis, L. fructivorans , L. frumenti, L. fuchuensis, L. gallinarum, L. gasseri, L. gastricus, L.

ghanensis, L. graminis, L. hammesii, L. hamsteri, L. harbinensis, L. hayakitensis , L.

helveticus, L. hilgardii, L. homohiochii, L. iners, L. ingluviei, L. intestinalis, L. jensenii, L. johnsonii, L. kalixensis, L. kefiranofaciens , L. kefiri, L. kimchii, L. kitasatonis, L. kunkeei, L. leichmannii, L. lindneri, L. malefermentans , L. mali, L. manihotivorans , L. mindensis, L. mucosae, L. murinus, L. nagelii, L. namurensis, L. nantensis, L. oligofermentans , L. oris, L. panis, L. pantheris, L. parabrevis, L. parabuchneri, L. paracasei, L. paracollinoides, L. parafarraginis , L. parakefiri, L. paralimentarius , L. paraplantarum, L. pentosus, L. perolens, L. plantarum, L. pontis, L. protectus, L. psittaci, L. rennini, L. reuteri, L. rhamnosus, L.

rimae, L. rogosae, L. rossiae, L. ruminis, L. saerimneri, L. sakei, L. salivarius, L.

sanfranciscensis, L. satsumensis, L. secaliphilus, L. sharpeae, L. siliginis, L. spicheri, L. suebicus, L. thailandensis, L. ultunensis, L. vaccinostercus, L. vaginalis, L. versmoldensis, L. vini, L. vitulinus, L. zeae, and L. zymae. In some embodiments, the non-clostridium strain is Lactobacillus mucosae. In some embodiments, the non-clostridium strain is Lactobacillus mucosae. In some embodiments, the Lactobacillus mucosae has a 16S rDNA sequence comprising SEQ ID NO:2. In some embodiments, the Lactobacillus mucosae has a 16S rDNA sequence having at least 97% homology with a nucleic acid comprising SEQ ID NO:2. In some embodiments, the Lactobacillus mucosae has a 16S rDNA sequence having at least 97% homology with a nucleic acid comprising SEQ ID NO:91.

In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition includes both Clostridium strains and non- Clostridium strains. In some embodiments, the non-clostridium strains are members of the genus

Turicibacter. In some embodiments, the non-clostridium strain is Turicibacter sanguinis. In some embodiments, the Turicibacter sanguinis has a 16S rDNA sequence comprising SEQ ID NO:6. In some embodiments, the Turicibacter sanguinis has a 16S rDNA sequence having at least 97% homology with a nucleic acid comprising SEQ ID NO:6. In some embodiments, the Turicibacter sanguinis has a 16S rDNA sequence having at least 97% homology with a nucleic acid comprising SEQ ID NO:90.

In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition includes both Clostridium strains and non-Clostridium strains. In some embodiments, the non-Clostridium strains are Lactobacillus mucosae and Turicibacter sanguinis.

In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Lactobacillus. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Turicibacter. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Lactobacillus or Turicibacter. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition only includes Clostridia strains. In some

embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition only includes Clostridia strains belonging to Clostridium cluster IV, XlVa or XVII strains. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Clostridium cluster XI strains.

In some embodiments, the disclosure provides compositions comprising two or more purified bacterial strains selected from the group consisting of: Clostridium scindens, Pseudoflavonifr actor capillosus, and Blautia hansenii. In some embodiments, the compositions disclosed herein do not include Clostridium scindens, Pseudoflavonifractor capillosus, or Blautia hansenii.

*= BaiCD ⁺

In one aspect, the disclosure provides Composition F (See e.g., Figures 13 and 14, and Tables Fl and F2). As shown in Figure 13, Composition F contains bacteria that have the following 16S rDNA sequences: SEQ ID NO:24, SEQ ID NO:25, SEQ ID NO:26, SEQ ID NO:27, SEQ ID NO:28, SEQ ID NO:29, SEQ ID NO:30, SEQ ID NO:31, SEQ ID NO:32, SEQ ID NO:33, SEQ ID NO:34, SEQ ID NO:35, SEQ ID NO:36, SEQ ID NO:37, SEQ ID NO:38, SEQ ID NO:39, SEQ ID NO:40, SEQ ID NO:41, SEQ ID NO:42, SEQ ID NO:43, SEQ ID NO:44, SEQ ID NO:45, SEQ ID NO:46, SEQ ID NO:47, SEQ ID NO:48, SEQ ID NO:49, SEQ ID NO:50, SEQ ID NO:51, SEQ ID NO:52, SEQ ID NO:53, SEQ ID NO:54, SEQ ID NO:55, SEQ ID NO:56, SEQ ID NO:57, SEQ ID NO:58, SEQ ID NO:59, SEQ ID NO:60, SEQ ID N0:61, SEQ ID NO:62, SEQ ID NO:63, SEQ ID NO:64, SEQ ID NO:65, SEQ ID NO:66, SEQ ID NO:67, SEQ ID NO:68, SEQ ID NO:69, SEQ ID NO:70, SEQ ID N0:71, SEQ ID NO:72, SEQ ID NO:73, SEQ ID NO:74, SEQ ID NO:75, SEQ ID NO:76, SEQ ID NO:77, SEQ ID NO:78, and SEQ ID NO:79.

In some embodiments, the disclosure provides compositions with two or more purified bacterial strains that have 16S rDNA sequences selected from the group consisting of SEQ ID NO:24, SEQ ID NO:25, SEQ ID NO:26, SEQ ID NO:27, SEQ ID NO:28, SEQ ID NO:29, SEQ ID NO:30, SEQ ID NO:31, SEQ ID NO:32, SEQ ID NO:33, SEQ ID NO:34, SEQ ID NO:35, SEQ ID NO:36, SEQ ID NO:37, SEQ ID NO:38, SEQ ID NO:39, SEQ ID NO:40, SEQ ID NO:41, SEQ ID NO:42, SEQ ID NO:43, SEQ ID NO:44, SEQ ID NO:45, SEQ ID NO:46, SEQ ID NO:47, SEQ ID NO:48, SEQ ID NO:49, SEQ ID NO:50, SEQ ID NO:51, SEQ ID NO:52, SEQ ID NO:53, SEQ ID NO:54, SEQ ID NO:55, SEQ ID NO:56, SEQ ID NO:57, SEQ ID NO:58, SEQ ID NO:59, SEQ ID NO:60, SEQ ID NO:61, SEQ ID NO:62, SEQ ID NO:63, SEQ ID NO:64, SEQ ID NO:65, SEQ ID NO:66, SEQ ID NO:67, SEQ ID NO:68, SEQ ID NO:69, SEQ ID NO:70, SEQ ID NO:71, SEQ ID NO:72, SEQ ID NO:73, SEQ ID NO:74, SEQ ID NO:75, SEQ ID NO:76, SEQ ID NO:77, SEQ ID NO:78, and SEQ ID NO:79.

In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:24, SEQ ID NO:25, SEQ ID NO:26, SEQ ID NO:27, SEQ ID NO:28, SEQ ID NO:29, SEQ ID NO:30, SEQ ID NO:31, SEQ ID NO:32, SEQ ID NO:33, SEQ ID NO:34, SEQ ID NO:35, SEQ ID NO:36, SEQ ID NO:37, SEQ ID NO:38, SEQ ID NO:39, SEQ ID NO:40, SEQ ID NO:41, SEQ ID NO:42, SEQ ID NO:43, SEQ ID NO:44, SEQ ID NO:45, SEQ ID NO:46, SEQ ID NO:47, SEQ ID NO:48, SEQ ID NO:49, SEQ ID NO:50, SEQ ID NO:51, SEQ ID NO:52, SEQ ID NO:53, SEQ ID NO:54, SEQ ID NO:55, SEQ ID NO:56, SEQ ID NO:57, SEQ ID NO:58, SEQ ID NO:59, SEQ ID NO:60, SEQ ID NO:61, SEQ ID NO:62, SEQ ID NO:63, SEQ ID NO:64, SEQ ID NO:65, SEQ ID NO:66, SEQ ID NO:67, SEQ ID NO:68, SEQ ID NO:69, SEQ ID NO:70, SEQ ID NO:71, SEQ ID NO:72, SEQ ID NO:73, SEQ ID NO:74, SEQ ID NO:75, SEQ ID NO:76, SEQ ID NO:77, SEQ ID NO:78, and SEQ ID NO:79.

The bacterial strains in Composition F are related to the following bacteria: Dorea longicatena, Ruminococcus obeum, Megasphaera elsdenii, Acidaminococcus fermentans, Acidaminococcus intestine, Megasphaera elsdenii, Ruminococcus faecis, Bacteroides cellulosilyticus, Anaerostipes hadrus, Ruminococcus obeum, Flavonifractor plautii,

Eubacterium rectale, Flavonifractor plautii, Megasphaera elsdenii, Eubacterium rectale, Ruminococcus champanellensis, Ruminococcus albus, Ruminococcus champanellensis, Ruminococcus faecis, Bifidobacterium bifidum, Anaerostipes hadrus, Anaerostipes hadrus, Anaerostipes hadrus, Eubacterium rectale, Ruminococcus faecis, Blautia luti, Ruminococcus faecis, Anaerostipes hadrus, Anaerostipes hadrus, Ruminococcus faecis, Eubacterium rectale, Eubacterium rectale, Anaerostipes hadrus, Ruminococcus faecis, Ruminococcus faecis, Dorea longicatena, Roseburia faecis, Blautia luti, Fusicatenibacter saccharivorans, Fusicatenibacter saccharivorans, Roseburia faecis, Megasphaera elsdenii, Eubacterium rectale, Eubacterium rectale, Roseburia faecis, Blautia faecis, Fusicatenibacter

saccharivorans, and Dorea formicigenerans .

In some embodiments, the disclosure provides compositions with two or more bacterial strains of species selected from the group consisting of Dorea longicatena,

Ruminococcus obeum, Megasphaera elsdenii, Acidaminococcus fermentans,

Acidaminococcus intestine, Megasphaera elsdenii, Ruminococcus faecis, Bacteroides cellulosilyticus, Anaerostipes hadrus, Ruminococcus obeum, Flavonifractor plautii,

Eubacterium rectale, Flavonifractor plautii, Megasphaera elsdenii, Eubacterium rectale, Ruminococcus champanellensis, Ruminococcus albus, Ruminococcus champanellensis, Ruminococcus faecis, Bifidobacterium bifidum, Anaerostipes hadrus, Anaerostipes hadrus, Anaerostipes hadrus, Eubacterium rectale, Ruminococcus faecis, Blautia luti, Ruminococcus faecis, Anaerostipes hadrus, Anaerostipes hadrus, Ruminococcus faecis, Eubacterium rectale, Eubacterium rectale, Anaerostipes hadrus, Ruminococcus faecis, Ruminococcus faecis, Dorea longicatena, Roseburia faecis, Blautia luti, Fusicatenibacter saccharivorans, Fusicatenibacter saccharivorans, Roseburia faecis, Megasphaera elsdenii, Eubacterium rectale, Eubacterium rectale, Roseburia faecis, Blautia faecis, Fusicatenibacter

saccharivorans, and Dorea formicigenerans .

In some embodiments, the disclosure provides compositions that include two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:84, SEQ ID NO:85, SEQ ID NO:92, SEQ ID NO:93, SEQ ID NO:96, SEQ ID NO:97, SEQ ID NO:99, SEQ ID NO: 100, SEQ ID NO: 104, SEQ ID NO: 107, SEQ ID NO: 111, SEQ ID NO: 112, SEQ ID NO: 113, SEQ ID NO: 114, SEQ ID NO: 115, SEQ ID NO: 116, SEQ ID NO: 117, SEQ ID NO: 118, SEQ ID NO: 119, and SEQ ID NO: 120. It should be appreciated that multiple strains of the compositions disclosed herein can have the same related bacterial species. For instance, Composition F includes 12 strains that have Eubacterium rectale as the closest related species.

In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster IV. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster XlVa. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster IX. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster IV. In some embodiments, at least one of the bacterial strains of the composition belongs to

Clostridium cluster XlVa and at least one of the bacterial strains belongs to Clostridium cluster IX. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster IV and at least one of the bacterial strains belongs to

Clostridium cluster IX. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster IV, at least one of the bacterial strains belongs to Clostridium cluster XlVa, and at least one of the bacterial strains belongs to Clostridium cluster IX. In some embodiments, the compositions provided herein do not include bacterial strains belonging to Clostridium cluster XVIII. In some embodiments, the compositions provided herein do not include bacterial strains belonging to Clostridium cluster XVI or XVIII.

Composition F includes non-clostridium bacterial strains. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition includes both Clostridium strains and non-clostridium strains. In some embodiments, the non-clostridium strains are the members of the genus Bacteroides. In some embodiments, the non-clostridium strain is Bacteroides cellulosilyticus. In some embodiments, the non- Clostridium strains are the members of the genus Bifidobacterium. In some embodiments, the non-clostridium strain is Bifidobacterium bifidum. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition includes both Clostridium strains and non-Clostridium strains, and wherein the non-Clostridium strains are Bacteroides cellulosilyticus and Bifidobacterium bifidum.

In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Bacteroides. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Bifidobacterium. In some embodiments, the disclosure provides

compositions comprising two or more bacteria, wherein the composition does not include Bacteroides and does not include Bifidobacterium. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include non-Clostridium strains. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition only includes Clostridia strains belonging to Clostridium cluster IV, XlVa or XVII strains. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Clostridium cluster XI strains.

Table Fl

Composition F

Table F2

Composition F, strain groupings

*Short chain fatty acid legend:

A, acetate; B, Butyrate; L, lactate;

P, propionate; S, succinate

In one aspect, the disclosure provides Composition G (See e.g., Figure 19; Table G). As shown in Figure 19, Composition G contains bacteria that have the following 16S rDNA sequences: SEQ ID NO:27, SEQ ID NO:43, SEQ ID NO:44, SEQ ID NO:51, SEQ ID NO:55, SEQ ID NO:68, SEQ ID NO:72, SEQ ID NO:70, SEQ ID NO:24, SEQ ID NO:34, SEQ ID NO:37, SEQ ID NO:46, SEQ ID NO:76, SEQ ID NO:77, SEQ ID NO:35, SEQ ID NO:62, SEQ ID NO:26, SEQ ID NO:63, SEQ ID NO:67, SEQ ID NO:40, SEQ ID NO:38, SEQ ID NO:47, SEQ ID NO:56, SEQ ID NO:25, and SEQ ID NO: 32.

In some embodiments, the disclosure provides compositions with two or more purified bacterial strains that have 16S rDNA sequences selected from the group consisting of SEQ ID NO:27, SEQ ID NO:43, SEQ ID NO:44, SEQ ID NO:51, SEQ ID NO:55, SEQ ID NO:68, SEQ ID NO:72, SEQ ID NO:70, SEQ ID NO:24, SEQ ID NO:34, SEQ ID NO:37, SEQ ID NO:46, SEQ ID NO:76, SEQ ID NO:77, SEQ ID NO:35, SEQ ID NO:62, SEQ ID NO:26, SEQ ID NO:63, SEQ ID NO:67, SEQ ID NO:40, SEQ ID NO:38, SEQ ID NO:47, SEQ ID NO:56, SEQ ID NO:25, and SEQ ID NO: 32.

In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:27, SEQ ID NO:43, SEQ ID NO:44, SEQ ID NO:51, SEQ ID NO:55, SEQ ID NO:68, SEQ ID NO:72, SEQ ID NO:70, SEQ ID NO:24, SEQ ID NO:34, SEQ ID NO:37, SEQ ID NO:46, SEQ ID NO:76, SEQ ID NO:77, SEQ ID NO:35, SEQ ID NO:62, SEQ ID NO:26, SEQ ID NO:63, SEQ ID NO:67, SEQ ID NO:40, SEQ ID NO:38, SEQ ID NO:47, SEQ ID NO:56, SEQ ID NO:25, and SEQ ID NO: 32.

The bacterial strains in Composition G are related to the following bacteria:

Acidaminococcus fermentans, Acidaminococcus intestine, Anaerostipes hadrus, Blautia faecis, Blautia hansenii, Dorea formicigenerans, Dorea longicatena, Eubacterium rectale, Flavonifractor plautii, Fusicatenibacter saccharivorans, Megasphaera elsdenii, Roseburia faecis, Ruminococcus champanellensis, Ruminococcus albus, Ruminococcus faecis, and Ruminococcus obeum.

In some embodiments, the disclosure provides compositions with two or more bacterial strains of species selected from the group consisting of Acidaminococcus

fermentans, Acidaminococcus intestine, Anaerostipes hadrus, Blautia faecis, Blautia hansenii, Dorea formicigenerans, Dorea longicatena, Eubacterium rectale, Flavonifractor plautii, Fusicatenibacter saccharivorans, Megasphaera elsdenii, Roseburia faecis,

Ruminococcus champanellensis, Ruminococcus albus, Ruminococcus faecis, and

Ruminococcus obeum.

In some embodiments, the disclosure provides compositions that include two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:84, SEQ ID NO:85, SEQ ID NO:92, SEQ ID NO:93, SEQ ID NO:96, SEQ ID NO:97, SEQ ID NO:99, SEQ ID NO: 104, SEQ ID NO: 107, SEQ ID NO: 111, SEQ ID NO: 112, SEQ ID NO: 113, SEQ ID NO: 114, SEQ ID NO: 115, SEQ ID NO: 116, SEQ ID NO: 117, and SEQ ID NO: 119.

In one aspect, the disclosure provides Composition H (See e.g., Figure 26, Table H). As shown in Figure 26, Composition H contains bacteria that have the following 16S rDNA sequences: SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO:21, SEQ ID NO:82, SEQ ID

NO:81, and SEQ ID NO:80. In some embodiments, the disclosure provides compositions with two or more purified bacterial strains that have 16S rDNA sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO:21, SEQ ID NO:82, SEQ ID NO:81, and SEQ ID NO:80.

In some embodiments, the compositions include two or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO:21, SEQ ID NO:82, SEQ ID NO:81, and SEQ ID NO:80. In some embodiments, the compositions include four or more purified bacterial strains comprising 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO: 14, SEQ ID NO: 16, SEQ ID NO:21, SEQ ID NO:82, SEQ ID NO:81, and SEQ ID NO:80.

The bacterial strains in Composition H are related to the following bacteria:

Anaerotruncus colihominis, Clostridium symbiosum, Clostridium innocuum,

Erysipelotrichaceae_bacterium_21-3, Clostridium disporicum, Clostridium bolteae, and Erysipelatoclostridium ramosum. In some embodiments, the disclosure provides

compositions with two or more bacterial strains selected from the group consisting of Anaerotruncus colihominis, Clostridium symbiosum, Clostridium innocuum,

Erysipelotrichaceae_bacterium_21-3, Clostridium disporicum, Clostridium bolteae, and Erysipelatoclostridium ramosum.

In some embodiments, the disclosure provides compositions that include two or more purified bacterial strains comprise 16S rDNA sequences having at least 97% homology with nucleic acid sequences selected from the group consisting of SEQ ID NO:86, SEQ ID NO:95, SEQ ID NO:98, SEQ ID NO: 110, SEQ ID NO: 122, and SEQ ID NO: 123.

Composition H includes bacteria from Clostridium cluster I, IV, XlVa, XVII and XVIII. In some embodiments, the disclosure provides compositions that include two or more purified bacterial strains from Clostridium cluster I, IV, XlVa, XVII and XVIII. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster IV. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster XlVa. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster XVII. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster I. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster XVIII. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster XlVa and at least one of the bacterial strains belongs to Clostridium cluster IV. In some embodiments, at least one of the bacterial strains of the composition belongs to Clostridium cluster XlVa and at least one of the bacterial strains belongs to Clostridium cluster XVII. Table H

In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include bacteria from Clostridium cluster I. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include bacteria from Clostridium cluster XVIII. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include bacteria from Clostridium cluster I and does not include bacteria from Clostridium cluster XVIII.

In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein all the bacteria are anaerobic bacteria. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein all the bacteria are obligate anaerobic bacteria.

In some embodiments, the disclosure provides compositions comprising two or more bacteria {e.g., purified bacterial strains), wherein the composition does not include

Clostridium scindens. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Flavonifractor plautii. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Parabacteroides. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Lactobacillus. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Colinsella. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Dialister. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Raoultella. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Streptococcus. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Staphylococcus. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Microbacterium. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Proteobacteria. In some embodiments, the disclosure provides

compositions comprising two or more bacteria, wherein the composition does not include Peptostreptococcaceae. In some embodiments, the disclosure provides compositions comprising two or more bacteria, wherein the composition does not include Oscillospiraceae.

In one aspect, the disclosure provides bacterial strains with 16S rDNA sequences that have homology to a nucleic acid sequence of any one of the sequences of the bacterial strains or species described herein. In some embodiments, the bacterial strain has at least 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.6%, 99.7%, 99.8% or 99.9% homology relative to any of the strains or bacterial species described herein over a specified region or over the entire sequence. It would be appreciated by one of skill in the art that the term "homology" or "percent homology," in the context of two or more nucleic acid sequences or amino acid sequences, refers to a measure of similarity between two or more sequences or portion(s) thereof. The homology may exist over a region of a sequence that is at least about 50 nucleotides in length, or more preferably over a region that is 100 to 500 or 1000 or more nucleotides in length. In some embodiments, the homology exists over the length the 16S rRNA or 16S rDNA sequence, or a portion thereof.

Additionally, or alternatively, two or more sequences may be assessed for the identity between the sequences. The terms "identical" or percent "identity" in the context of two or more nucleic acids or amino acid sequences, refer to two or more sequences or subsequences that are the same. Two sequences are "substantially identical" if two sequences have a specified percentage of amino acid residues or nucleotides that are the same (e.g., at least 80%, 85%, 90%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.6%, 99.7%, 99.8% or 99.9% identical) over a specified region or over the entire sequence, when compared and aligned for maximum correspondence over a comparison window, or designated region as measured using one of the following sequence comparison algorithms or by manual alignment and visual inspection. Optionally, the identity exists over a region that is at least about 50 nucleotides in length, or more preferably over a region that is 100 to 500 or 1000 or more nucleotides in length. In some embodiments, the identity exists over the length the 16S rRNA or 16S rDNA sequence.

Additionally, or alternatively, two or more sequences may be assessed for the alignment between the sequences. The terms " alignment " or percent " alignment " in the context of two or more nucleic acids or amino acid sequences, refer to two or more sequences or subsequences that are the same. Two sequences are "substantially aligned" if two sequences have a specified percentage of amino acid residues or nucleotides that are the same (e.g., at least 80%, 85%, 90%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.6%, 99.7%, 99.8% or 99.9% identical) over a specified region or over the entire sequence, when compared and aligned for maximum correspondence over a comparison window, or designated region as measured using one of the following sequence comparison algorithms or by manual alignment and visual inspection. Optionally, the alignment exists over a region that is at least about 50 nucleotides in length, or more preferably over a region that is 100 to 500 or 1000 or more nucleotides in length. In some embodiments, the identity exists over the length the 16S rRNA or 16S rDNA sequence.

For sequence comparison, typically one sequence acts as a reference sequence, to which test sequences are compared. Methods of alignment of sequences for comparison are well known in the art. See, e.g., by the local homology algorithm of Smith and Waterman (1970) Adv. Appl. Math. 2:482c, by the homology alignment algorithm of Needleman and Wunsch, J. Mol. Biol. (1970) 48:443, by the search for similarity method of Pearson and Lipman. Proc. Natl. Acad. Sci. USA (1998) 85:2444, by computerized implementations of these algorithms (GAP, BESTFIT, FASTA, and TFASTA in the Wisconsin Genetics Software Package, Genetics Computer Group. Madison. WI), or by manual alignment and visual inspection (see. e.g., Brent et al., Current Protocols in Molecular Biology, John Wiley & Sons, Inc. (Ringbou ed., 2003)). Two examples of algorithms that are suitable for determining percent sequence identity and sequence similarity are the BLAST and BLAST 2.0 algorithms, which are described in Altschul et al., Nuc. Acids Res. (1977) 25:3389-3402, and Altschul et al., J. Mol. Biol. (1990) 215:403-410, respectively.

In one aspect, the disclosure provides compositions comprising multiple purified bacterial strains (e.g., Compositions A-J). For instance, Figures 1, 13, 19, and 26 present several example compositions comprising multiple bacterial strains. In one aspect, the 16S rDNA sequences of purified bacterial strains of the compositions were compared to 16S rDNA sequences of known bacterial species/strains in a bacterial genome database to identify the closest known related bacterial species to the bacterial strains disclosed herein (See e.g., Table 1). It should be appreciated that multiple bacterial strains of the compositions disclosed herein may have the same closest related bacterial species. In one aspect, the disclosure provides compositions comprising one or more bacterial strains or species with 16S rDNA sequences that have homology to a nucleic acid sequence of any one of the sequences provided by SEQ ID NOs: l-83 and 124-159. In some embodiments, the species with 16S rDNA sequences with homology to a nucleic acid sequence of any one of the closest related species to any of the strains described herein, correspond to bacterial strains with 16S rDNA sequences provided by SEQ ID NOs:84-123.

In some embodiments, the compositions disclosed herein provide at least one of the bacterial strains (e.g., purified bacterial strains) described herein. In some embodiments, the compositions that comprise at least one bacterial strain, comprise at least one bacterial strain with a 16S rDNA sequence selected from any one of SEQ ID NOs: l-122 and 124-159. In some embodiments, the compositions that comprise at least one bacterial strain, comprise at least one bacterial strain with a 97% homology to 16S rDNA sequence selected from any one of SEQ ID NOs: 1-122 and 124-159.

In some embodiments, the compositions disclosed herein comprise two or more bacterial strains. In some embodiments, the compositions described herein comprise at least 2, at least 3, at least 4, at least 5, at least 6, at least 7, at least 8, at least 9, at least 10, at least 11, at least 12, at least 13, at least 14, at least 15, at least 16, at least 17, at least 18, at least 19, or at least 20 or more bacterial strains (e.g., purified bacterial strains).

It should be appreciated the compositions and methods provided herein can be distinguished from compositions and methods associated with the treatment of C. difficile infection that are available. For instance, it has been proposed that non-toxigenic C. difficile strains, i.e., strains that do not produce C. difficile toxins, may be used to treat C. difficile infection (See, e.g., US 6,635,260). The compositions disclosed herein can be distinguished at least because the compositions described herein do not comprise non-toxigenic strains of C. difficile. Thus, in some embodiments, the compositions herein do not include comprise non-toxigenic strains of C. difficile. C. difficile belongs to Clostridium cluster XI. In some embodiments, the compositions herein do not include bacterial strains belonging to

Clostridium cluster XI. It is also considered in the art that bacterial strains expressing a bile inducible 7α/β- dehydroxylation operon can be used in the treatment of C. difficile ( see, e.g., Buffie et al. Nature (2015) 517:205-208). The catalysis of bile acid 7a dihydroxylation is mediated by a stereo-specific NAD(H)-dependent 3-oxo-A ⁴ -cholenoic acid oxidoreductase encoded by the gene baiCD. In some embodiments, the compositions provided herein do not mediate bile acid 7-alpha-dehydroxylation.

In contrast to the findings in the art, in some embodiments, as shown herein, combinations of bacterial strains that do not encode baiCD (or a homolog thereof), or encode a baiCD that comprises one or more mutations that result in a non-functional BaiCD protein ("baiCD-"), are more effective at treating C. difficile infection and/or reducing or inhibiting production of Toxin B by C. difficile than combinations of bacterial strains that have a functional BaiCD protein ("baiCD+"). Thus, in some embodiments, the compositions of bacterial strains provided herein are baiCD- (i.e., the combination of the bacteria has no effective baiCD+ function). In some embodiments, all of bacterial strains in the

compositions provided herein are baiCD-. In some embodiments, the majority (i.e., 50% or greater) of the bacterial strains in the compositions are baiCD-. In some embodiments, the majority (i.e., 50% or greater) of the bacterial strains in the compositions are baiCD- and the composition has no effective BaiCD function. In some embodiments, the minority (i.e., 50% or less) of the bacterial strains in the compositions are baiCD- and the composition has no effective BaiCD function. In some embodiments, bacterial strains for the compositions are selected based on the absence (or presence) of a baiCD gene or a predicted baiCD gene. In some embodiments, bacterial strains may be modified (e.g., genetically engineered) to prevent or reduce expression of a baiCD gene and/or to reduce or eliminate NAD(H)- dependent 3-oxo-A ⁴ -cholenoic acid oxidoreductase activity of BaiCD protein. The NAD(H)- dependent 3-oxo-A ⁴ -cholenoic acid oxidoreductase activity of a bacterial strain may be assessed by methods such as measuring the amount of 7a-dehydroxylated bile acid. In some embodiments, the compositions described herein comprise bacterial strains without the baiCD operon (baiCD ^' ) or baiCD function.

In some embodiments, the compositions described herein do not include Clostridium scindens. In some embodiments, the compositions described herein do not include

Barnesiella intestihominis. In some embodiments, the compositions described herein do not include Blautia hansenii. In some embodiments, the compositions described herein do not include Pseudoflavinofr actor capillosus. In some embodiments, the compositions described herein do not include Clostridium scindens. Barnesiella intestihominis, Blautia hansenii or Pseudoflavinofr actor capillosus.

In some embodiments, the compositions provided herein do not include Colinsella aerofaciens. In some embodiments, the compositions provided herein do not include

Acetovibrio ethanolgignens. In some embodiments, the compositions provided herein do not bacterial strains belonging to Clostridum cluster I. In some embodiments, the compositions provided herein do not include Clostridium butyricum. In some embodiments, the

compositions provided herein do not include Clostridium disporicum. In some embodiments, the compositions provided herein do not include strains belonging to Clostridum cluster XI. In some embodiments, the compositions provided herein do not include Clostridium glycolicum. In some embodiments, the compositions provided herein do not include

Faecalibacterium prausnitzii. In some embodiments, the compositions provided herein do not include Turicibacter sanguinis. In some embodiments, the compositions provided herein do not include Eubacterium rectale. In some embodiments, the compositions provided herein do not include Eubacterium ventriosum. In some embodiments, the compositions provided herein do not include Ruminococcus obeum. In some embodiments, the compositions provided herein do not include Pseudobutyrivibrio. In some embodiments, the compositions provided herein do not include Christensenellaceae. In some embodiments, the

compositions do not comprise gram-negative bacteria. In some embodiments, the

compositions do not comprise E. coli. In some embodiments, the compositions do not comprise fungi, such as Monilla species.

In some embodiments of the compositions provided herein, the compositions do not include bacterial strains that are resistant to one or more antibiotics. It should be appreciated that it may be desirable to have a mechanism to remove the bacterial compositions provided herein from the body of the subject after administration. One such mechanism is to remove the bacterial compositions by antibiotic treatment. Thus, in some embodiments, the compositions do not include bacterial strains that are resistant to one or more antibiotics. In some embodiments, the compositions do not include bacterial strains that are resistant to one or more antibiotics selected from the group consisting of penicillin, benzylpenicillin, ampicillin, sulbactam, amoxicillin, clavulanate, tazobactam, piperacillin, cefmetazole, vancomycin, imipenem, meropenem, metronidazole and clindamycin. In some embodiments, the compositions do not include bacterial strains that are resistant to vancomycin.

In some embodiments, the compositions include bacterial strains that are susceptible to at least four antibiotics that are efficacious in humans. In some embodiments, the compositions include bacterial strains that are susceptible to at least three antibiotics that are efficacious in humans. In some embodiments, the compositions include bacterial strains that are susceptible to at least two antibiotics that are efficacious in humans. In some

embodiments, the compositions include bacterial strains that are susceptible to at least one antibiotic that is efficacious in humans. In some embodiments, the compositions include only bacterial strains that are susceptible to at least four antibiotics that are efficacious in humans. In some embodiments, the compositions include only bacterial strains that are susceptible to at least three antibiotics that are efficacious in humans. In some embodiments, the compositions include only bacterial strains that are susceptible to at least two antibiotics that are efficacious in humans. In some embodiments, the compositions include bacterial strains that are susceptible to at least one antibiotic that is efficacious in humans. As used herein, an "antibiotic that is efficacious in a human" refers to an antibiotic that has been used to successfully treat bacterial infections in a human.

In some embodiments, the compositions described herein comprise spore forming and non-spore forming bacterial strains. In some embodiments, the compositions described herein comprise spore forming bacterial strains. In some embodiments, the compositions described herein comprise only spore forming bacterial strains. In some embodiments, the compositions described herein comprise only non-spore forming bacterial strains. The spore- forming bacteria can be in spore form (i.e. , as spores) or in vegetative form (i.e.. , as vegetative cells). In spore form, bacteria are generally more resistant to environmental conditions, such as heat, acid, radiation, oxygen, chemicals, and antibiotics. In contrast, in the vegetative state or actively growing state, bacteria are more susceptible to such environmental conditions, compared to in the spore form. In general, bacterial spores are able to germinate from the spore form into a vegetative/actively growing state, under appropriate conditions. For instance, bacteria in spore format may germinate when thye are introduced in the intestine.

In some embodiments, at least one (e.g. , 1, 2, 3, 4, 5, or more) of the bacterial strains in the composition is a spore former. In some embodiments, at least one (e.g. , 1, 2, 3, 4, 5, or more) of the bacterial strains in the composition is in spore form. In some embodiments, at least one (e.g. , 1, 2, 3, 4, 5, or more) of the bacterial strains in the composition is a non-spore former. In some embodiments, at least one (e.g. , 1, 2, 3, 4, 5, or more) of the bacterial strains in the composition is in vegetative form (As discussed above, spore forming bacteria can also be in vegetative form). In some embodiments, at least one (e.g. , 1, 2, 3, 4, 5, or more) of the bacterial strains in the composition is in spore form and at least one (e.g. , 1, 2, 3, 4, 5, or more) of the bacterial strains in the composition is in vegetative form. In some embodiments, at least one bacterial strain that is considered able to form spores (i.e. , a spore-former) but is present in the composition in vegetative form. In some embodiments, at least one bacterial strain that is considered able to form spores is present in the composition both in spore form and in vegetative form.

In some embodiments, the disclosure provides compositions wherein the

compositions comprise bacterial strains that are spore forming bacterial strains. In some embodiments, the disclosure provides compositions wherein the compositions comprise bacterial strains that are non- spore forming bacterial strains. In some embodiments, the disclosure provides compositions wherein the compositions comprise bacterial strains that are spore forming bacterial strains and bacterial strains that are non-spore forming bacterial strains. In some embodiments, the disclosure provides compositions, wherein the

compositions comprise a mixture of bacterial strains wherein at least 10% of the bacterial strains are spore forming bacterial strains, at least 20% of the bacterial strains are spore forming bacterial strains, at least 30% of the bacterial strains are spore forming bacterial strains, at least 40% of the bacterial strains are spore forming bacterial strains, at least 50% of the bacterial strains are spore forming bacterial strains, at least 60% of the bacterial strains are spore forming bacterial strains, at least 70% of the bacterial strains are spore forming bacterial strains, at least 80% of the bacterial strains are spore forming bacterial strains, at least 90% of the bacterial strains are spore forming bacterial strains bacteria up to 100% spore forming bacterial strains. Whether a bacterial strain is a spore forming strain can be determined for instance by evaluating the genome of the bacterial strain for the presence of sporulation genes. However, it should be appreciated that not all bacteria that are predicted to encode spore forming genes can be made to sporulate. In addition, whether a bacterial strain is a spore forming strain can be determined by exposing the bacterial strain to stress conditions, e.g., heat or exposure to chemicals (e.g., ethanol or chloroform), that are known to induce sporulation.

It should be appreciated that spore forming bacteria can be in spore form or in vegetative form. In some embodiments of the compositions provided herein, the spore forming bacteria are in spore form. In some embodiments of the compositions provided herein, the spore forming bacteria are in vegetative form. In some embodiments of the compositions provided herein, the spore forming bacteria are both present in spore form and in vegetative form. In some embodiments, the disclosure provides compositions, wherein the compositions comprise spore forming bacteria at least 10% of the spore forming bacteria are in spore format, at least 20% of the spore forming bacteria are in spore format, at least 30% of the spore forming bacteria are in spore format, at least 40% of the spore forming bacteria are in spore format, at least 50% of the spore forming bacteria are in spore format, at least 60% of the spore forming bacteria are in spore format, at least 70% of the spore forming bacteria are in spore format, at least 80% of the spore forming bacteria are in spore format, at least 90% of the spore forming bacteria are in spore format, up to 100% in spore format.

It is envisioned that the bacterial strains of the compositions provided herein are alive and will be alive when they reach the target area (e.g., the intestines). Bacterial spores are considered to be alive in this regards. In some embodiments, bacteria that are administered as spores may germinate in the target area (e.g., the intestines). It should further be appreciated that not all of the bacteria are alive and the compositions can include a percentage (e.g., by weight) that is not alive. In addition, in some embodiments, the compositions include bacterial strains that are not alive when administered or at the time when the composition reaches the target area (e.g., the intestines). It is envisioned that non- living bacteria may still be useful by providing some nutrients and metabolites for the other bacterial strains in the composition.

Methods of inducing sporulation of spore-forming bacterial strains are well known in the art (See e.g., Paredes-Sabja et al., Trends Microbiol. (2011) 19(2):85-94). Generally, bacterial strains that are spore-formers can be made to go into spore form by stressing the bacterial strains. Non-limiting examples of stresses that can induce sporulation are an increase in temperature, change in the nutrients available and/or exposure to chemicals (e.g., ethanol or chloroform). It should be noted that bacteria that are non-spore formers, for instance because they are missing sporulation genes, cannot be made to sporulate by stress. To prepare compositions in which all the bacterial strains are in the spore form, the composition or bacterial cultures used to prepare the composition may be subjected to treatment to kill any bacteria not in spore form (e.g., in vegetative form), for example by exposing the composition to heat and are chemically breaking down the non-spore bacteria. The bacteria in spore format can subsequently be separated from the non-spore bacteria for instance by filtration.

The amount of spores can be quantified using techniques know in the art. These techniques include phase contrast microscopy for enumerating spores using a

hemocytometer. In addition, the viability of spores can be determined by plating the spores and growing the spores. For instance, spores can be plated in appropriate media and incubated in the anaerobic chamber for a period of time (e.g. , 48-96 hrs.). Viability can subsequently be determined by quantifying the colony forming units which correspond to spores that germinated. For instance, spores can be plated on TCCFA plates (Taurocholate, cycloserine, cefoxintin, fructose agar plates), in which taurocholate helps the spores to germinate. In addition, spores can be quantified using the dipicolinic assay (DPA assay). DPA is an agent that allows for spore selection and is a clear indicator of endospores. When complexed with terbium, bright green luminescence is observed.

In any of the compositions provided herein, in some embodiments, the bacterial strains are purified. In any of the compositions provided herein, in some embodiments, the bacterial strains are isolated. Any of the bacterial strains described herein may be isolated and/or purified, for example, from a source such as a culture or a microbiota sample (e.g., fecal matter). The bacterial strains used in the compositions provided herein generally are isolated from the microbiome of healthy individuals. However, bacterial strains can also be isolated from individuals that are considered not to be healthy. In some embodiments, the compositions include strains originating from multiple individuals.

As used herein, the term "isolated" bacteria that have been separated from one or more undesired component, such as another bacterium or bacterial strain, one or more component of a growth medium, and/or one or more component of a sample, such as a fecal sample. In some embodiments, the bacteria are substantially isolated from a source such that other components of the source are not detected.

As also used herein, the term "purified" refers to a bacterial strain or composition comprising such that has been separated from one or more components, such as

contaminants. In some embodiments, the bacterial strain is substantially free of

contaminants. In some embodiments, one or more bacterial strains of a composition may be independently purified from one or more other bacteria produced and/or present in a culture or a sample containing the bacterial strain. In some embodiments, a bacterial strain is isolated or purified from a sample and then cultured under the appropriate conditions for bacterial replication, e.g. , under anaerobic culture conditions. The bacteria that is grown under appropriate conditions for bacterial replication can subsequently be isolated/purified from the culture in which it is grown.

In some embodiments, the bacterial strains of the compositions provided herein are obligate anaerobes. In some embodiments, the bacterial strains of the compositions provided herein are facultative anaerobes.

Aspects of the present disclosure are related to methods for treating a pathogenic infection in a subject by administering a therapeutically effective amount of any of the compositions described herein. In some embodiments, the subject is a mammalian subject, such as a human, non-human primate, rodent, rabbit, sheep, pig, dog, cat, horse, or cow. In some embodiments, the subject is a human subject. In some embodiments, the subject is a Pig- In some embodiments, the subject is a carrier of a pathogenic organism and is suffering from the effects of the infection (e.g., diarrhea caused by C. difficile toxins). In some embodiments the subject is an asymptomatic carrier of a pathogen. In some

embodiments, the subject is a carrier of C. difficile. In some embodiments the subject is an asymptomatic C. difficile carrier. In some embodiments, the subject has experienced recurrent or chronic pathogenic infections. In some embodiments, the subject is suffering from a first occurrence of a particular pathogenic infection. In some embodiments, the subject has been treated with antibiotics which resulted in the recurrence of the pathogenic infection. In some embodiments, the subject has been treated with antibiotics which resulted in a first occurrence of a pathogenic infection. In some embodiments, the subject is to undergo a procedure that puts the subject at a higher risk of infection. In some embodiments, the compositions provided herein are administered to a subject to lower the risk of becoming infected by a pathogen.

In some embodiments, the compositions provided herein are administered to a subject if the subject has a dysbiosis (e.g., has as microbiome associated with a disease state). In some embodiments, treatment with the compositions provided herein results in the change in the microbiome of the subject. In some embodiments, treatment with the compositions provided herein removes the dysbiosis in the subject resulting in a healthy microbiome. In some embodiments, treatment with the compositions provided herein removes the dysbiosis in the subject resulting in microbiome refractory or less susceptible to infection by a pathogen.

As used herein, the term "pathogen" in regard to a pathogenic infection refers to a microorganism (e.g. , a bacterium) that causes a disease or a disease state in a subject. In some embodiments, the disease or disease state of the subject may include symptoms such as colitis, diarrhea, watery diarrhea, abdominal cramping, fever, blood or pus in the stool, nausea, dehydration, loss of appetite, chills, weight loss, and/or kidney failure. In some embodiments, the pathogenic infection may be diagnosed, for example, by detecting a pathogen (or protein or nucleic acid associated with a pathogen) in a fecal sample collected from the subject. In some embodiments, the pathogenic infection may be diagnosed, for example, by comparing the microbiota of a fecal sample of the subject with the microbiota in a fecal sample of a healthy subject.

In some embodiments, the pathogenic infection is C. difficile; Clostridium

perfringens; Clostridium botulinum; Clostridium tributrycum; Clostridium sporogenes; Escherichia coli; Pseudomonas aeruginosa, such as Multidrug Resistant Pseudomonas aeruginosa; Vancomycin Resistant Enterococci (VRE) Carbapenem Resistant

Enterobacteriaceae (CRE) Neisseria gonorrheae; Acinetobacter; Multidrug Resistant Acinetobacter; Campylobacter; Multi-drug resistant Campylobacter, Candida; Fluconazole- resistant Candida; Extended spectrum beta-lactamese (ESBL) producing Enterobacteriaceae; Salmonella, Salmonella Typhimurium, Drug resistant non-typhoid Salmonella spp. ; Drug resistant Salmonella Typhi; Drug resistant Shigella; Staphylococcus aureus, such as

Methicillin Resistant S. aureus or vancomycin resistant S. aureus; Drug resistant

Streptococcus pneumoniae; Drug resistant Tuberculosis; Erythromycin Resistant Group A Streptococcus; Clindamycin resistant Group B Streptococcus, and any combinations thereof. In some embodiments, the pathogenic infection is C. difficile. In some embodiments, the C. difficile is an antibiotic -resistant C. difficile, e.g., fluoroquinolone resistant C. difficile. In some embodiments, the pathogenic infection is vancomycin-resistant Enterococci.

Additional non-limiting examples of pathogens responsible for pathogenic infection that can be treated according to the methods provided herein are Leishmania, Staphylococcus epidermis, Staphylococcus saprophyticus, Streptococcus pyogenes, Streptococcus pneumoniae, Streptococcus agalactiae, Enterococcus faecalis, Corynebacterium diptheriae, Bacillus anthracis, Listeria monocytogenes, Clostridium perfringens, Clostridium tetanus, Clostridium botulinum, Clostridium difficile, Neisseria meningitidis, Neisseria gonorrhoeae, Escherichia coli, Salmonella typhimurium, Salmonella cholerasuis, Salmonella enterica, Salmonella enteriditis, Yersinia pestis, Yersinia pseudotuberculosis, Yersinia enterocolitica, Vibrio cholerae, Campylobacter jejuni, Campylobacter fetus, Helicobacter pylori,

Pseudomonas aeruginosa, Pseudomonas mallei, Haemophilus influenzae, Bordetella pertussis, Mycoplasma pneumoniae, Ureaplasma urealyticum, Legionella pneumophila, Treponema pallidum, Leptospira interrogans, Borrelia burgdorferi, Mycobacterium tuberculosis, Mycobacterium leprae, Chlamydia psittaci, Chlamydia trachomatis, Chlamydia pneumoniae, Rickettsia ricketsii, Rickettsia akari, Rickettsia prowazekii, Brucella abortus, Brucella melitens, Brucella suis, and Francisella tularensis. In general, any bacterium that is capable of inducing a disease in a subject and/or that is not present in healthy individual is considered a pathogen herein. It should be appreciated that a subject may carry multiple pathogens and/or have multiple pathogenic infections.

Any of the compositions described herein may be administered to a subject in a therapeutically effective amount or a dose of a therapeutically effective amount to treat or prevent a pathogenic infection (e.g., one or more pathogenic infections). The terms "treat" or "treatment" refer to reducing or alleviating one or more of the symptoms associated with a pathogenic infection, reducing the amount of bacterial toxin produced by the pathogenic infection, and/or reducing the bacterial load of the pathogenic infection. The terms "prevent" or "prevention" encompass prophylactic administration and may reduce the incidence or likelihood of pathogenic infection or a recurrent or chronic pathogenic infection. For instance, in some embodiments, administration of the compositions provided herein result in a healthy microbiome that is refractory to pathogenic infection, thereby preventing the pathogenic infection.

As used herein, a "therapeutically effective amount" of composition, such as a pharmaceutical composition, is any amount that results in a desired response or outcome in a subject, such as those described herein, including but not limited to prevention of infection, an immune response or an enhanced immune response to the pathogenic infection, prevention or reduction of symptoms associated with pathogenic infection, and/or a reduction or inhibition of toxin production by the pathogenic infection. It should be appreciated that the term effective amount may be expressed in number of bacteria or bacterial spores to be administered. It should further be appreciated that the bacteria can multiply once

administered. Thus, administration of even a relatively small amount of bacteria may have therapeutic effects.

In some embodiments, the therapeutically effective amount of any of the

compositions described herein is an amount sufficient to enhance survival of the subject, reduce the bacterial burden of the pathogenic infection in the subject, and/or reduce or inhibit toxin production by the pathogenic infection. In some embodiments, the therapeutically effective amount is an amount sufficient to reduce the bacterial burden of the pathogenic infection in a fecal sample from the subject by at least 1.5-fold, 2-fold, 3-fold, 4-fold, 5-fold, 6-fold, 7-fold, 8-fold, 9-fold, 10-fold, 20-fold, 30-fold, 40-fold, 50-fold, 100-fold, 1000-fold, 10 ⁴ -fold, 10 ⁵ -fold or more, as compared to the bacterial burden in a subject with a pathogenic infection that has not received any of the compositions described herein, or as compared to a fecal sample from the same subject that was collected prior to administration of any of the compositions. In some embodiments, the compositions provided herein inhibit the production of a bacterial toxin, e.g., C. difficile Toxin B. In some embodiments, the therapeutically effective amount is an amount sufficient to reduce or inhibit the amount of bacterial toxin (e.g., C. difficile Toxin B) produced by pathogenic infection in a fecal sample from the subject by at least 1.5-fold, 2-fold, 3-fold, 4-fold, 5-fold, 6-fold, 7-fold, 8-fold, 9-fold, 10-fold, 20-fold, 30- fold, 40-fold, 50-fold, 100-fold, 150-fold, 200-fold, 500-fold or more, as compared to the amount of the bacterial toxin in a subject with a pathogenic infection that has not received any of the compositions described herein or as compared to a fecal sample from the same subject that was collected prior to administration of any of the compositions.

In some embodiments, the compositions provided herein induce the proliferation and/or accumulation of regulatory T cells in the subject. As will be evident to one of ordinary skill in the art, regulatory T cells, also referred to as "Tregs," are a subset of T lymphocytes that are generally thought to suppress an abnormal or excessive immune response and play a role in immune tolerance. Regulatory T cells may be identified based expression of the markers Foxp3 and CD4 (Foxp3+ CD4+). The term regulatory T cells may also include Foxp3 -negative regulatory T cells that are IL-10-producing CD4-positive T cells.

In some embodiments, the therapeutically effective amount is an amount sufficient to induce the proliferation and/or accumulation of Tregs in the subject (or in a sample obtained from a subject) by at least 1.5-fold, 2-fold, 3-fold, 4-fold, 5-fold, 6-fold, 7-fold, 8-fold, 9-fold, 10-fold, 20-fold, 30-fold, 40-fold, 50-fold, 100-fold, 150-fold, 200-fold, 500-fold or more, as compared to the amount of Tregs in a subject (e.g. , a subject with a pathogenic infection) that has not received any of the compositions described herein or as compared to a fecal sample from the same subject that was collected prior to administration of any of the compositions.

As used herein, the phrase "induces proliferation and/or accumulation of regulatory T cells" refers to an effect of inducing the differentiation of immature T cells into regulatory T cells, which differentiation leads to the proliferation and/or the accumulation of regulatory T cells. Further, the meaning of "induces proliferation and/or accumulation of regulatory T cells" includes in vivo effects, in vitro effects, and ex vivo effects. In some embodiments, the proliferation and/or accumulation of regulatory T cells may be assessed by detecting and/or quantifying the number of cells that express markers of regulatory T cells (e.g., Foxp3 and CD4), for example by flow cytometry. In some embodiments, the proliferation and/or accumulation of regulatory T cells may be assessed by determining the activity of the regulatory T cells, such as the production of cytokines (e.g., IL-10). In some embodiments, the therapeutically effective amount is an amount sufficient to recolonize or repopulate the gastrointestinal tract of the subject with non-pathogenic bacteria. In some embodiments, the therapeutically effective amount is an amount sufficient to graft one or more of the bacterial strains of the composition in the gastrointestinal tract of the subject. In some embodiments, a fecal sample is obtained from the subject to assess the bacterial burden of the pathogenic infection and/or evaluate the efficacy of administration of the bacterial compositions described herein. In some embodiments, the microbiota of the subject (e.g., the identity and abundance of strains and/or species of the microbiota) may be assessed to determine a disease state of the subject and/or assess progress of the treatment. In some embodiments, the microbiota of the subject having a pathogenic infection is compared to the microbiota of a healthy subject, such as a subject that is not experiencing or has not experienced the pathogenic infection. In some embodiments, the microbiota of the subject having a pathogenic infection is compared to the microbiota of the same subject from a fecal sample obtained from the subject prior to the pathogenic infection.

Any of the compositions described herein, including the pharmaceutical compositions and food products comprising the compositions, may contain bacterial strains in any form, for example in an aqueous form, such as a solution or a suspension, embedded in a semi-solid form, in a powdered form or freeze dried form. In some embodiments, the composition or the bacterial strains of the composition are lyophilized. In some embodiments, a subset of the bacterial strains in a composition is lyophilized. Methods of lyophilizing compositions, specifically compositions comprising bacteria, are well known in the art. See, e.g. , US 3,261,761 ; US 4,205, 132; PCT Publications WO 2014/029578 and WO 2012/098358, herein incorporated by reference in their entirety. The bacteria may be lyophilized as a combination and/or the bacteria may be lyophilized separately and combined prior to administration. A bacterial strain may be combined with a pharmaceutical excipient prior to combining it with the other bacterial strain or multiple lyophilized bacteria may be combined while in lyophilized form and the mixture of bacteria, once combined may be subsequently be combined with a pharmaceutical excipient. In some embodiments, the bacterial strain is a lyophilized cake. In some embodiments, the compositions comprising the one or more bacterial strains are a lyophilized cake.

The bacterial strains of the composition can be manufactured using fermentation techniques well known in the art. In some embodiments, the active ingredients are manufactured using anaerobic fermenters, which can support the rapid growth of anaerobic bacterial species. The anaerobic fermenters may be, for example, stirred tank reactors or disposable wave bioreactors. Culture media such as BL media and EG media, or similar versions of these media devoid of animal components, can be used to support the growth of the bacterial species. The bacterial product can be purified and concentrated from the fermentation broth by traditional techniques, such as centrifugation and filtration, and can optionally be dried and lyophilized by techniques well known in the art.

In some embodiments, the composition of bacterial strains may be formulated for administration as a pharmaceutical composition. The term "pharmaceutical composition" as used herein means a product that results from the mixing or combining of at least one active ingredient, such as any two or more purified bacterial strains described herein, and one or more inactive ingredients, which may include one or more pharmaceutically acceptable excipient.

An "acceptable" excipient refers to an excipient that must be compatible with the active ingredient and not deleterious to the subject to which it is administered. In some embodiments, the pharmaceutically acceptable excipient is selected based on the intended route of administration of the composition, for example a composition for oral or nasal administration may comprise a different pharmaceutically acceptable excipient than a composition for rectal administration. Examples of excipients include sterile water, physiological saline, solvent, a base material, an emulsifier, a suspending agent, a surfactant, a stabilizer, a flavoring agent, an aromatic, an excipient, a vehicle, a preservative, a binder, a diluent, a tonicity adjusting agent, a soothing agent, a bulking agent, a disintegrating agent, a buffer agent, a coating agent, a lubricant, a colorant, a sweetener, a thickening agent, and a solubilizer.

Pharmaceutical compositions of the invention can be prepared in accordance with methods well known and routinely practiced in the art (see e.g. , Remington: The Science and Practice of Pharmacy, Mack Publishing Co. 20th ed. 2000). The pharmaceutical

compositions described herein may further comprise any carriers or stabilizers in the form of a lyophilized formulation or an aqueous solution. Acceptable excipients, carriers, or stabilizers may include, for example, buffers, antioxidants, preservatives, polymers, chelating reagents, and/or surfactants. Pharmaceutical compositions are preferably manufactured under GMP conditions. The pharmaceutical compositions can be used orally, nasally or

parenterally, for instance, in the form of capsules, tablets, pills, sachets, liquids, powders, granules, fine granules, film-coated preparations, pellets, troches, sublingual preparations, chewables, buccal preparations, pastes, syrups, suspensions, elixirs, emulsions, liniments, ointments, plasters, cataplasms, transdermal absorption systems, lotions, inhalations, aerosols, injections, suppositories, and the like.

In some embodiments, the bacteria are formulated for delivery to the intestines (e.g., the small intestine and/or the colon). In some embodiments, the bacteria are formulated with an enteric coating that increases the survival of the bacteria through the harsh environment in the stomach. The enteric coating is one which resists the action of gastric juices in the stomach so that the bacteria which are incorporated therein will pass through the stomach and into the intestines. The enteric coating may readily dissolve when in contact with intestinal fluids, so that the bacteria enclosed in the coating will be released in the intestinal tract. Enteric coatings may consist of polymer and copolymers well known in the art, such as commercially available EUDRAGIT (Evonik Industries). (See e.g., Zhang, AAPS

PharmSciTech, (2016) 17 (1), 56-67).

The bacteria may also be formulated for rectal delivery to the intestine (e.g., the colon). Thus, in some embodiments, the bacterial compositions may be formulated for delivery by suppository, colonoscopy, endoscopy, sigmoidoscopy or enema. A

pharmaceutical preparation or formulation and particularly a pharmaceutical preparation for oral administration, may include an additional component that enables efficient delivery of the compositions of the disclosure to the intestine (e.g., the colon). A variety of

pharmaceutical preparations that allow for the delivery of the compositions to the intestine (e.g., the colon) can be used. Examples thereof include pH sensitive compositions, more specifically, buffered sachet formulations or enteric polymers that release their contents when the pH becomes alkaline after the enteric polymers pass through the stomach. When a pH sensitive composition is used for formulating the pharmaceutical preparation, the pH sensitive composition is preferably a polymer whose pH threshold of the decomposition of the composition is between about 6.8 and about 7.5. Such a numeric value range is a range in which the pH shifts toward the alkaline side at a distal portion of the stomach, and hence is a suitable range for use in the delivery to the colon. It should further be appreciated that each part of the intestine (e.g., the duodenum, jejunum, ileum, cecum, colon and rectum), has different biochemical and chemical environment. For instance, parts of the intestines have different pHs, allowing for targeted delivery by compositions that have a specific pH sensitivity. Thus, the compositions provided herein may be formulated for delivery to the intestine or specific parts of the intestine (e.g., the duodenum, jejunum, ileum, cecum, colon and rectum) by providing formulations with the appropriate pH sensitivity. (See e.g., Villena et al., Int J P harm 2015, 487 (1-2): 314-9). Another embodiment of a pharmaceutical preparation useful for delivery of the compositions to the intestine (e.g., the colon) is one that ensures the delivery to the colon by delaying the release of the contents (e.g., the bacterial strains) by approximately 3 to 5 hours, which corresponds to the small intestinal transit time. In one embodiment of a

pharmaceutical preparation for delayed release, a hydrogel is used as a shell. The hydrogel is hydrated and swells upon contact with gastrointestinal fluid, with the result that the contents are effectively released (released predominantly in the colon). Delayed release dosage units include drug-containing compositions having a material which coats or selectively coats a drug or active ingredient to be administered. Examples of such a selective coating material include in vivo degradable polymers, gradually hydrolyzable polymers, gradually water- soluble polymers, and/or enzyme degradable polymers. A wide variety of coating materials for efficiently delaying the release is available and includes, for example, cellulose-based polymers such as hydroxypropyl cellulose, acrylic acid polymers and copolymers such as methacrylic acid polymers and copolymers, and vinyl polymers and copolymers such as polyvinylpyrrolidone.

Additional examples of pharmaceutical compositions that allow for the delivery to the intestine (e.g., the colon) include bioadhesive compositions which specifically adhere to the colonic mucosal membrane (for example, a polymer described in the specification of US Patent No. 6.368.586) and compositions into which a protease inhibitor is incorporated for protecting particularly a biopharmaceutical preparation in the gastrointestinal tracts from decomposition due to an activity of a protease.

Another example of a system enabling the delivery to the intestine (e.g., the colon) is a system of delivering a composition to the colon by pressure change in such a way that the contents are released by utilizing pressure change caused by generation of gas in bacterial fermentation at a distal portion of the stomach. Such a system is not particularly limited, and a more specific example thereof is a capsule which has contents dispersed in a suppository base and which is coated with a hydrophobic polymer (for example, ethyl cellulose).

A further example of a system enabling the delivery of a composition to the intestine (e.g., the colon), is a composition that includes a coating that can be removed by an enzyme present in the gut (e.g., the colon), such as, for example, a carbohydrate hydrolase or a carbohydrate reductase. Such a system is not particularly limited, and more specific examples thereof include systems which use food components such as non-starch

polysaccharides, amylose, xanthan gum, and azopolymers. The compositions provided herein can also be delivered to specific target areas, such as the intestine, by delivery through an orifice (e.g., a nasal tube) or through surgery. In addition, the compositions provided herein that are formulated for delivery to a specific area (e.g., the cecum or the colon), may be administered by a tube (e.g., directly into the small intestine). Combining mechanical delivery methods such as tubes with chemical delivery methods such as pH specific coatings, allow for the delivery of the compositions provided herein to a desired target area (e.g., the cecum or the colon).

The compositions comprising bacterial strains are formulated into pharmaceutically acceptable dosage forms by conventional methods known to those of skill in the art. Dosage regimens are adjusted to provide the optimum desired response (e.g., the prophylactic or therapeutic effect). In some embodiments, the dosage form of the composition is a tablet, pill, capsule, powder, granules, solution, or suppository. In some embodiments, the pharmaceutical composition is formulated for oral administration. In some embodiments, the pharmaceutical composition is formulated such that the bacteria of the composition, or a portion thereof, remain viable after passage through the stomach of the subject. In some embodiments, the pharmaceutical composition is formulated for rectal administration. _, e.g. as a suppository. In some embodiments, the pharmaceutical composition is formulated for delivery to the intestine or a specific area of the intestine (e.g., the colon) by providing an appropriate coating (e.g., a pH specific coating, a coating that can be degraded by target area specific enzymes, or a coating that can bind to receptors that are present in a target area).

Dosages of the active ingredients in the pharmaceutical compositions of the present invention can be varied so as to obtain an amount of the active ingredient which is effective to achieve the desired pharmaceutical response for a particular subject, composition, and mode of administration, without being toxic or having an adverse effect on the subject. The selected dosage level depends upon a variety of factors including the activity of the particular compositions of the present invention employed, the route of administration, the time of administration, the duration of the treatment, other drugs, compounds and/or materials used in combination with the particular compositions employed, the age, sex, weight, condition, general health and prior medical history of the subject being treated, and like factors.

A physician, veterinarian or other trained practitioner, can start doses of the pharmaceutical composition at levels lower than that required to achieve the desired therapeutic effect and gradually increase the dosage until the desired effect (e.g., treatment of a pathogenic infection, reduction of bacterial burden of pathogenic infection, reduction or inhibition of toxin production) is achieved. In general, effective doses of the compositions of the present invention, for the prophylactic treatment of groups of people as described herein vary depending upon many different factors, including routes of administration, physiological state of the subject, whether the subject is human or an animal, other medications

administered, and the therapeutic effect desired. Dosages need to be titrated to optimize safety and efficacy. In some embodiments, the dosing regimen entails oral administration of a dose of any of the compositions described herein. In some embodiments, the dosing regimen entails oral administration of multiple doses of any of the compositions described herein. In some embodiments, the composition is administered orally the subject once, twice, 3 times, 4 times, 5 times, 6 times, 7 times, 8 times, 9 times, or at least 10 times.

The compositions, including the pharmaceutical compositions disclosed herein, include compositions with a range of active ingredients (e.g., live bacteria, bacteria in spore format). The amount of bacteria in the compositions may be expressed in weight, number of bacteria and/or CFUs (colony forming units). In some embodiments, the pharmaceutical compositions disclosed herein contain about 10, about 10 ² , about 10 ³ , about 10 ⁴ , about 10 ⁵ , about 10 ⁶ , about 10 ⁷ , about 10 ⁸ , about 10 ⁹ , about 10 ¹⁰ , about 10 ¹¹ , about 10 ¹² , about 10 ¹³ or more of each of the bacteria of the composition per dosage amount. In some embodiments, the pharmaceutical compositions disclosed herein contain about 10, about 10 ² , about 10 ³ , about 10 ⁴ , about 10 ⁵ , about 10 ⁶ , about 10 ⁷ , about 10 ⁸ , about 10 ⁹ , about 10 ¹⁰ , about 10 ¹¹ , about 10 ¹² , about 10 ¹³ or more total bacteria per dosage amount. It should further be appreciated that the bacteria of the compositions may be present in different amounts. Thus, for instance, as a non-limiting example, a composition may include 10 ³ of bacteria A, 10 ⁴ of bacteria B and 10 ⁶ of bacteria C. In some embodiments, the pharmaceutical compositions disclosed herein contain about 10, about 10 ² , about 10 ³ , about 10 ⁴ , about 10 ⁵ , about 10 ⁶ , about 10 ⁷ , about 10 ⁸ , about 10 ⁹ , about 10 ¹⁰ , about 10 ¹¹ , about 10 ¹² , about 10 ¹³ or more CFUs of each of the bacteria in the composition per dosage amount. In some embodiments, the

pharmaceutical compositions disclosed herein contain about 10 ¹ , about 10 ² , about 10 ³ , about 10 ⁴ , about 10 ⁵ , about 10 ⁶ , about 10 ⁷ , about 10 ⁸ , about 10 ⁹ , about 10 ¹⁰ , about 10 ¹¹ , about 10 ¹² , about 10 ¹³ or more CFUs in total for all of the bacteria combined per dosage amount. As discussed above, bacteria of the compositions may be present in different amounts. In some embodiments, the pharmaceutical compositions disclosed herein contain about 10 ^-7 , about 10- ⁶ , about 10 ^-5 , about 10 ^-4 , about 10 ^-3 , about 10 ^-2 , about 10 ^-1 or more grams of each of the bacteria in the composition per dosage amount. In some embodiments, the pharmaceutical compositions disclosed herein contain about 10 ^-7 , about 10 ^-6 , about 10 ^-5 , about 10 ^-4 , about 10- ³ , about 10 ^-2 , about 10 ^-1 or more grams in total for all of the bacteria combined per dosage amount. In some embodiment, the dosage amount is one administration device (e.g., one table, pill or capsule). In some embodiment, the dosage amount is the amount that is administered in a particular period (e.g., one day or one week).

In some embodiments, the pharmaceutical compositions disclosed herein contain between 10 and 10 ¹³ , between 10 ² and 10 ¹³ , between 10 ³ and 10 ¹³ , between 10 ⁴ and 10 ¹³ , between 10 ⁵ and 10 ¹³ , between 10 ⁶ and 10 ¹³ , between 10 ⁷ and 10 ¹³ , between 10 ⁸ and 10 ¹³ , between 10 ⁹ and 10 ¹³ , between 10 ¹⁰ and 10 ¹³ , between 10 ¹¹ and 10 ¹³ , between 10 ¹² and 10 ¹³ , between 10 and 10 ¹² , between 10 ² and 10 ¹² , between 10 ³ and 10 ¹² , between 10 ⁴ and 10 ¹² , between 10 ⁵ and 10 ¹² , between 10 ⁶ and 10 ¹² , between 10 ⁷ and 10 ¹² , between 10 ⁸ and 10 ¹² , between 10 ⁹ and 10 ¹² , between 10 ¹⁰ and 10 ¹² , between 10 ¹¹ and 10 ¹² , between 10 and 10 ¹¹ , between 10 ² and 10 ¹¹ , between 10 ³ and 10 ¹³ , between 10 ⁴ and 10 ¹³ , between 10 ⁵ and 10 ¹³ , between 10 ⁶ and 10 ¹³ , between 10 ⁷ and 10 ¹¹ , between 10 ⁸ and 10 ¹¹ , between 10 ⁹ and 10 ¹¹ , between 10 ¹⁰ and 10 ¹¹ , between 10 and 10 ¹⁰ , between 10 ² and 10 ¹⁰ , between 10 ³ and 10 ¹⁰ , between 10 ⁴ and 10 ¹⁰ , between 10 ⁵ and 10 ¹⁰ , between 10 ⁶ and 10 ¹⁰ , between 10 ⁷ and 10 ¹⁰ , between 10 ⁸ and 10 ¹⁰ , between 10 ⁹ and 10 ¹⁰ , between 10 and 10 ⁹ , between 10 ² and 10 ⁹ , between 10 ³ and 10 ⁹ , between 10 ⁴ and 10 ⁹ , between 10 ⁵ and 10 ⁹ , between 10 ⁶ and 10 ⁹ , between 10 ⁷ and 10 ⁹ , between 10 ⁸ and 10 ⁹ , between 10 and 10 ⁸ , between 10 ² and 10 ⁸ , between 10 ³ and 10 ⁸ , between 10 ⁴ and 10 ⁸ , between 10 ⁵ and 10 ⁸ , between 10 ⁶ and 10 ⁸ , between 10 ⁷ and 10 ⁸ , between 10 and 10 ⁷ , between 10 ² and 10 ⁷ , between 10 ³ and 10 ⁷ , between 10 ⁴ and 10 ⁷ , between 10 ⁵ and 10 ⁷ , between 10 ⁶ and 10 ⁷ , between 10 and 10 ⁶ , between 10 ² and 10 ⁶ , between 10 ³ and 10 ⁶ , between 10 ⁴ and 10 ⁶ , between 10 ⁵ and 10 ⁶ , between 10 and 10 ⁵ , between 10 ² and 10 ⁵ , between 10 ³ and 10 ⁵ , between 10 ⁴ and 10 ⁵ , between 10 and 10 ⁴ , between 10 ² and 10 ⁴ , between 10 ³ and 10 ⁴ , between 10 and 10 ³ , between 10 ² and 10 ³ , or between 10 and 10 ² of each of the bacteria of the composition per dosage amount. In some embodiments, the pharmaceutical compositions disclosed herein contain between 10 and 10 ¹³ , between 10 ² and 10 ¹³ , between 10 ³ and 10 ¹³ , between 10 ⁴ and 10 ¹³ , between 10 ⁵ and 10 ¹³ , between 10 ⁶ and 10 ¹³ , between 10 ⁷ and 10 ¹³ , between 10 ⁸ and 10 ¹³ , between 10 ⁹ and 10 ¹³ , between 10 ¹⁰ and 10 ¹³ , between 10 ¹¹ and 10 ¹³ , between 10 ¹² and 10 ¹³ , between 10 and 10 ¹² , between 10 ² and 10 ¹² , between 10 ³ and 10 ¹² , between 10 ⁴ and 10 ¹² , between 10 ⁵ and 10 ¹² , between 10 ⁶ and 10 ¹² , between 10 ⁷ and 10 ¹² , between 10 ⁸ and 10 ¹² , between 10 ⁹ and 10 ¹² , between 10 ¹⁰ and 10 ¹² , between 10 ¹¹ and 10 ¹² , between 10 and 10 ¹¹ , between 10 ² and 10 ¹¹ , between 10 ³ and 10 ¹³ , between 10 ⁴ and 10 ¹³ , between 10 ⁵ and 10 ¹³ , between 10 ⁶ and 10 ¹³ , between 10 ⁷ and 10 ¹¹ , between 10 ⁸ and 10 ¹¹ , between 10 ⁹ and 10 ¹¹ , between 10 ¹⁰ and 10 ¹¹ , between 10 and 10 ¹⁰ , between 10 ² and 10 ¹⁰ , between 10 ³ and 10 ¹⁰ , between 10 ⁴ and 10 ¹⁰ , between 10 ⁵ and 10 ¹⁰ , between 10 ⁶ and 10 ¹⁰ , between 10 ⁷ and 10 ¹⁰ , between 10 ⁸ and 10 ¹⁰ , between 10 ⁹ and 10 ¹⁰ , between 10 and 10 ⁹ , between 10 ² and 10 ⁹ , between 10 ³ and 10 ⁹ , between 10 ⁴ and 10 ⁹ , between 10 ⁵ and 10 ⁹ , between 10 ⁶ and 10 ⁹ , between 10 ⁷ and 10 ⁹ , between 10 ⁸ and 10 ⁹ , between 10 and 10 ⁸ , between 10 ² and 10 ⁸ , between 10 ³ and 10 ⁸ , between 10 ⁴ and 10 ⁸ , between 10 ⁵ and 10 ⁸ , between 10 ⁶ and 10 ⁸ , between 10 ⁷ and 10 ⁸ , between 10 and 10 ⁷ , between 10 ² and 10 ⁷ , between 10 ³ and 10 ⁷ , between 10 ⁴ and 10 ⁷ , between 10 ⁵ and 10 ⁷ , between 10 ⁶ and 10 ⁷ , between 10 and 10 ⁶ , between 10 ² and 10 ⁶ , between 10 ³ and 10 ⁶ , between 10 ⁴ and 10 ⁶ , between 10 ⁵ and 10 ⁶ , between 10 and 10 ⁵ , between 10 ² and 10 ⁵ , between 10 ³ and 10 ⁵ , between 10 ⁴ and 10 ⁵ , between 10 and 10 ⁴ , between 10 ² and 10 ⁴ , between 10 ³ and 10 ⁴ , between 10 and 10 ³ , between 10 ² and 10 ³ , or between 10 and 10 ² total bacteria per dosage amount.

In some embodiments, the pharmaceutical compositions disclosed herein contain between 10 and 10 ¹³ , between 10 ² and 10 ¹³ , between 10 ³ and 10 ¹³ , between 10 ⁴ and 10 ¹³ , between 10 ⁵ and 10 ¹³ , between 10 ⁶ and 10 ¹³ , between 10 ⁷ and 10 ¹³ , between 10 ⁸ and 10 ¹³ , between 10 ⁹ and 10 ¹³ , between 10 ¹⁰ and 10 ¹³ , between 10 ¹¹ and 10 ¹³ , between 10 ¹² and 10 ¹³ , between 10 and 10 ¹² , between 10 ² and 10 ¹² , between 10 ³ and 10 ¹² , between 10 ⁴ and 10 ¹² , between 10 ⁵ and 10 ¹² , between 10 ⁶ and 10 ¹² , between 10 ⁷ and 10 ¹² , between 10 ⁸ and 10 ¹² , between 10 ⁹ and 10 ¹² , between 10 ¹⁰ and 10 ¹² , between 10 ¹¹ and 10 ¹² , between 10 and 10 ¹¹ , between 10 ² and 10 ¹¹ , between 10 ³ and 10 ¹³ , between 10 ⁴ and 10 ¹³ , between 10 ⁵ and 10 ¹³ , between 10 ⁶ and 10 ¹³ , between 10 ⁷ and 10 ¹¹ , between 10 ⁸ and 10 ¹¹ , between 10 ⁹ and 10 ¹¹ , between 10 ¹⁰ and 10 ¹¹ , between 10 and 10 ¹⁰ , between 10 ² and 10 ¹⁰ , between 10 ³ and 10 ¹⁰ , between 10 ⁴ and 10 ¹⁰ , between 10 ⁵ and 10 ¹⁰ , between 10 ⁶ and 10 ¹⁰ , between 10 ⁷ and 10 ¹⁰ , between 10 ⁸ and 10 ¹⁰ , between 10 ⁹ and 10 ¹⁰ , between 10 and 10 ⁹ , between 10 ² and 10 ⁹ , between 10 ³ and 10 ⁹ , between 10 ⁴ and 10 ⁹ , between 10 ⁵ and 10 ⁹ , between 10 ⁶ and 10 ⁹ , between 10 ⁷ and 10 ⁹ , between 10 ⁸ and 10 ⁹ , between 10 and 10 ⁸ , between 10 ² and 10 ⁸ , between 10 ³ and 10 ⁸ , between 10 ⁴ and 10 ⁸ , between 10 ⁵ and 10 ⁸ , between 10 ⁶ and 10 ⁸ , between 10 ⁷ and 10 ⁸ , between 10 and 10 ⁷ , between 10 ² and 10 ⁷ , between 10 ³ and 10 ⁷ , between 10 ⁴ and 10 ⁷ , between 10 ⁵ and 10 ⁷ , between 10 ⁶ and 10 ⁷ , between 10 and 10 ⁶ , between 10 ² and 10 ⁶ , between 10 ³ and 10 ⁶ , between 10 ⁴ and 10 ⁶ , between 10 ⁵ and 10 ⁶ , between 10 and 10 ⁵ , between 10 ² and 10 ⁵ , between 10 ³ and 10 ⁵ , between 10 ⁴ and 10 ⁵ , between 10 and 10 ⁴ , between 10 ² and 10 ⁴ , between 10 ³ and 10 ⁴ , between 10 and 10 ³ , between 10 ² and 10 ³ , or between 10 and 10 ² CFUs of each of the bacteria of the composition per dosage amount. In some embodiments, the pharmaceutical compositions disclosed herein contain between 10 and 10 ¹³ , between 10 ² and 10 ¹³ , between 10 ³ and 10 ¹³ , between 10 ⁴ and 10 ¹³ , between 10 ⁵ and 10 ¹³ , between 10 ⁶ and 10 ¹³ , between 10 ⁷ and 10 ¹³ , between 10 ⁸ and 10 ¹³ , between 10 ⁹ and 10 ¹³ , between 10 ¹⁰ and 10 ¹³ , between 10 ¹¹ and 10 ¹³ , between 10 ¹² and 10 ¹³ , between 10 and 10 ¹² , between 10 ² and 10 ¹² , between 10 ³ and 10 ¹² , between 10 ⁴ and

10 ¹² , between 10 ⁵ and 10 ¹² , between 10 ⁶ and 10 ¹² , between 10 ⁷ and 10 ¹² , between 10 ⁸ and 10 ¹² , between 10 ⁹ and 10 ¹² , between 10 ¹⁰ and 10 ¹² , between 10 ¹¹ and 10 ¹² , between 10 and

10 ¹¹ , between 10 ² and 10 ¹¹ , between 10 ³ and 10 ¹³ , between 10 ⁴ and 10 ¹³ , between 10 ⁵ and

10 ¹³ , between 10 ⁶ and 10 ¹³ , between 10 ⁷ and 10 ¹¹ , between 10 ⁸ and 10 ¹¹ , between 10 ⁹ and 10 ¹¹ , between 10 ¹⁰ and 10 ¹¹ , between 10 and 10 ¹⁰ , between 10 ² and 10 ¹⁰ , between 10 ³ and 10 ¹⁰ , between 10 ⁴ and 10 ¹⁰ , between 10 ⁵ and 10 ¹⁰ , between 10 ⁶ and 10 ¹⁰ , between 10 ⁷ and 10 ¹⁰ , between 10 ⁸ and 10 ¹⁰ , between 10 ⁹ and 10 ¹⁰ , between 10 and 10 ⁹ , between 10 ² and 10 ⁹ , between 10 ³ and 10 ⁹ , between 10 ⁴ and 10 ⁹ , between 10 ⁵ and 10 ⁹ , between 10 ⁶ and 10 ⁹ , between 10 ⁷ and 10 ⁹ , between 10 ⁸ and 10 ⁹ , between 10 and 10 ⁸ , between 10 ² and 10 ⁸ , between 10 ³ and 10 ⁸ , between 10 ⁴ and 10 ⁸ , between 10 ⁵ and 10 ⁸ , between 10 ⁶ and 10 ⁸ , between 10 ⁷ and 10 ⁸ , between 10 and 10 ⁷ , between 10 ² and 10 ⁷ , between 10 ³ and 10 ⁷ , between 10 ⁴ and 10 ⁷ , between 10 ⁵ and 10 ⁷ , between 10 ⁶ and 10 ⁷ , between 10 and 10 ⁶ , between 10 ² and 10 ⁶ , between 10 ³ and 10 ⁶ , between 10 ⁴ and 10 ⁶ , between 10 ⁵ and 10 ⁶ , between 10 and 10 ⁵ , between 10 ² and 10 ⁵ , between 10 ³ and 10 ⁵ , between 10 ⁴ and 10 ⁵ , between 10 and 10 ⁴ , between 10 ² and 10 ⁴ , between 10 ³ and 10 ⁴ , between 10 and 10 ³ , between 10 ² and 10 ³ , or between 10 and 10 ² total CFUs per dosage amount.

In some embodiments, the pharmaceutical compositions disclosed herein contain between 10 ^-7 and 10 ¹ , between 10 ^-6 and 10 ¹ , between 10 ^-5 and 10 ¹ , between 10 ^-4 and 10 ¹ , between 10 ^-3 and 10 ¹ , between 10 ^-2 and 10 ¹ , between 10 ^-7 and 10 ^~2 , between 10 ^-6 and 10 ^~2 , between 10 ^-5 and 10 ^~2 , between 10 ^-4 and 10 ^~2 , between 10 ^-3 and 10 ^~2 , between 10 ^-7 and 10 ^~3 , between 10 ^-6 and 10 ^~3 , between 10 ^-5 and 10 ^~3 , between 10 ^-4 and 10 ^~3 , between 10 ^-7 and 10 ^~4 , between 10 ^-6 and 10 ^~4 , between 10 ^-5 and 10 ^~4 , between 10 ^-7 and 10 ^-5 ' between 10 ^-6 and 10 ^~5 , or between 10 ^-7 and 10 ^-6 grams of each of the bacteria in the composition per dosage amount. In some embodiments, the pharmaceutical compositions disclosed herein contain between 10 ^-7 and 10 ^-1 , between 10 ^-6 and 10 ^-1 , between 10 ^-5 and 10 ^-1 , between 10 ^-4 and 10 ^-1 , between 10 ^-3 and 10 ^-1 , between 10 ^-2 and 10 ^-1 , between 10 ^-7 and 10 ^-2 , between 10 ^-6 and 10 ^-2 , between 10 ^-5 and 10 ^-2 , between 10 ^-4 and 10 ^-2 , between 10 ³ and 10 ^-2 , between 10 ^-7 and 10 ³ , between 10 ^-6 and 10 ^-3 , between 10 ^-5 and 10 ^-3 , between 10 ^-4 and 10 ^-3 , between 10 ^-7 and 10 ^-4 , between 10 ^-6 and 10 ^-4 , between 10 ^-5 and 10 ^-4 , between 10 ^-7 and 10 ^-5 ' between 10 ^-6 and 10 ^-5 , or between 10 ^-7 and 10 ^-6 grams of all of the bacteria combined per dosage amount. Also with the scope of the present disclosure are food products comprising any of the bacterial strains described herein and a nutrient. Food products are, in general, intended for the consumption of a human or an animal. Any of the bacterial strains described herein may be formulated as a food product. In some embodiments, the bacterial strains are formulated as a food product in spore form. In some embodiments, the bacterial strains are formulated as a food product in vegetative form. In some embodiments, the food product comprises both vegetative bacteria and bacteria in spore form. The compositions disclosed herein can be used in a food or beverage, such as a health food or beverage, a food or beverage for infants, a food or beverage for pregnant women, athletes, senior citizens or other specified group, a functional food, a beverage, a food or beverage for specified health use, a dietary supplement, a food or beverage for patients, or an animal feed. Non-limiting examples of the foods and beverages include various beverages such as juices, refreshing beverages, tea beverages, drink preparations, jelly beverages, and functional beverages; alcoholic beverages such as beers; carbohydrate-containing foods such as rice food products, noodles, breads, and pastas; paste products such as fish hams, sausages, paste products of seafood; retort pouch products such as curries, food dressed with a thick starchy sauces, soups; dairy products such as milk, dairy beverages, ice creams, cheeses, and yogurts; fermented products such as fermented soybean pastes, yogurts, fermented beverages, and pickles; bean products; various

confectionery products such as Western confectionery products including biscuits, cookies, and the like, Japanese confectionery products including steamed bean-jam buns, soft adzuki- bean jellies, and the like, candies, chewing gums, gummies, cold desserts including jellies, cream caramels, and frozen desserts; instant foods such as instant soups and instant soy-bean soups; microwavable foods; and the like. Further, the examples also include health foods and beverages prepared in the forms of powders, granules, tablets, capsules, liquids, pastes, and jellies.

Food products containing bacterial strains described herein may be produced using methods known in the art and may contain the same amount of bacteria (e.g., by weight, amount or CFU) as the pharmaceutical compositions provided herein. Selection of an appropriate amount of bacteria in the food product may depend on various factors, including for example, the serving size of the food product, the frequency of consumption of the food product, the specific bacterial strains contained in the food product, the amount of water in the food product, and/or additional conditions for survival of the bacteria in the food product.

Examples of food products which may be formulated to contain any of the bacterial strains described herein include, without limitation, a beverage, a drink, a bar, a snack, a dairy product, a confectionery product, a cereal product, a ready-to-eat product, a nutritional formula, such as a nutritional supplementary formulation, a food or beverage additive.

In some embodiments, the subject has not received a dose of an antibiotic prior to administration of the bacterial composition. In some embodiments, the subject has not been administered an antibiotic at least 1, at least 2, at least 3, at least 5, at least 10, at least 15, at least 20, at least 25, at least 30, at least 60, at least 90, at least 120, at least 180 or at least 360 days prior to administration of the compositions provided herein. In some embodiments, the person has not been administered and antibiotic to treat the pathogenic infection. In some embodiments, the compositions provided herein comprise the first treatment of the pathogenic infection.

In some embodiments, the subject may be administered one or more doses of an antibiotic prior to or concurrently with a bacterial composition. Generally, the first line of defense in the treatment of a pathogenic infection is the administration of an antibiotic. In some embodiments, the subject is administered a single dose of an antibiotic prior to the bacterial composition. In some embodiments, the subject is administered multiple doses of an antibiotic prior to the bacterial composition. In some embodiments, the subject is administered at least 2, 3, 4, 5 or more doses of an antibiotic prior to the bacterial composition. In some embodiments, the subject is administered a dose of an antibiotic at substantially the same time as the bacterial composition. Examples of antibiotics that can be administered include, without limitation, kanamycin, gentamicin, colistin, metronidazole, vancomycin, clindamycin, fidaxomicin, and cefoperazone.

Table 1 below provides sequence identifier numbers (SEQ ID NOs) used in the compositions of the experiments disclosed herein, along with the accompanying strain identification number (Strain ID). The closest bacterial species to the indicated strain is presented by genus-species. The 16S rDNA sequence associated with each genus species identified as the closest related genus species is also provided. The percent alignment presents the percent identity between the sequence of the indicated strain with the sequence from the closest genus species and the length of the alignment. The GenBank Accession Number of the closest related species is provided in the last column.

In some embodiments, in any of the compositions described herein, Clostridum bolteae can be replaced with Clostridium bolteae 90A9 . In some embodiments, in any of the compositions described herein, Anaerotruncus colihominis can be replaced with

Anaerotruncus colihominis DSM 17241. In some embodiments, in any of the compositions described herein, Eubacterium fissicatena can be replaced with Sellimonas instestinalis,

Drancourtella massiliensis or Drancourtella massiliensis GPl . In some embodiments, in any of the compositions described herein, Clostridium symbiosum can be replaced with

Clostridium symbiosum WAL-14163. In some embodiments, in any of the compositions described herein, Blautia producta can be replaced with Clostridium bacterium CD5.1-1D4 or Blautia product ATCC27340. In some embodiments, in any of the compositions described herein, Dorea longicatena can be replaced with Dorea longicatena CAG:42. In some embodiments, in any of the compositions described herein, Clostridium innocuum can be replaced with Erysipelotrichaceae bacterium 21_3. In some embodiments, in any of the compositions described herein, Flavonifr actor plautii can be replaced with Clostridium orbiscindens 1_3_50AFAA.

Aspects described herein provide pharmaceutical composition comprising a purified bacterial mixture consisting of bacterial strains comprising 16S rDNA sequences of at least 95% homology to SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some aspects, the bacterial strains have at least 97% homology to SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some aspects, the bacterial strains have at least 98% homology to SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some aspects, the bacterial strains have at least 99% homology to SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21.

In some aspects, at least a portion of the bacteria of the pharmaceutical composition are in spore-form. In some aspects, the pharmaceutical composition further comprises a pharmaceutically acceptable excipient.

In some aspects, the pharmaceutical composition is formulated for oral

administration. In some aspects, the pharmaceutical composition is in the form of a capsule. In some aspects, the pharmaceutical composition is formulated for delivery to the colon. In some aspects, the pharmaceutical composition further comprises a pH sensitive composition comprising one or more enteric polymers.

Aspects described herein provide pharmaceutical compositions comprising a purified bacterial mixture consisting of bacterial strains comprising 16S rDNA sequences of at least 95% homology to SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157. In some aspects, the bacterial strains have at least 97% homology to SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157. In some aspects, the bacterial strains have at least 98% homology to SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157. In some aspects, the bacterial strains have at least 99% homology to SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157.

In some aspects, at least a portion of the bacterial strains are in spore-form. In some aspects, the pharmaceutical composition further comprises a pharmaceutically acceptable excipient.

In some aspects, the pharmaceutical composition is formulated for oral

administration. In some aspects, the pharmaceutical composition is in the form of a capsule. In some aspects, the pharmaceutical composition is formulated for delivery to the colon. In some aspects, the pharmaceutical composition further comprises a pH sensitive composition comprising one or more enteric polymers.

Aspects described herein provide pharmaceutical compositions comprising a purified bacterial mixture comprising bacterial strains comprising 16S rDNA sequences of at least 95% homology to SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some aspects, the bacterial strains have at least 97% homology to SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some aspects, the bacterial strains have at least 98% homology to SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some aspects, the bacterial strains have at least 99% homology to SEQ ID NO: 10, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 19, SEQ ID NO:20, and SEQ ID NO:21. In some aspects, at least a portion of the bacterial strains are in spore-form. In some aspects, the pharmaceutical composition further comprises a pharmaceutically acceptable excipient.

In some aspects, the pharmaceutical composition is formulated for oral

administration. In some aspects, the pharmaceutical composition is in the form of a capsule. In some aspects, the pharmaceutical composition is formulated for delivery to the colon. In some aspects, the pharmaceutical composition further comprises a pH sensitive composition comprising one or more enteric polymers.

Aspects described herein provide pharmaceutical compositions comprising a purified bacterial mixture comprising bacterial strains comprising 16S rDNA sequences of at least 95% homology to SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157. In some aspects, the bacterial strains have at least 97% homology to SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157. In some aspects, the bacterial strains have at least 98% homology to SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157. In some aspects, the bacterial strains have at least 99% homology to SEQ ID NO: 124, SEQ ID NO: 129, SEQ ID NO: 132, SEQ ID NO: 137, SEQ ID NO: 141, SEQ ID NO: 146, SEQ ID NO: 152, and SEQ ID NO: 157. In some aspects, at least a portion of the bacterial strains are in spore-form. In some aspects, the pharmaceutical composition further comprises a pharmaceutically acceptable excipient.

In some aspects, the pharmaceutical composition is formulated for oral

administration. In some aspects, the pharmaceutical composition is in the form of a capsule. In some aspects, the pharmaceutical composition is formulated for delivery to the colon. In some aspects, the pharmaceutical composition further comprises a pH sensitive composition comprising one or more enteric polymers.

Aspects described herein provide pharmaceutical compositions comprising a purified bacterial mixture consisting of the following bacterial strains: Clostridium bolteae,

Anaerostruncus colihominis, Sellimonas intestinalis, Clostridium symbiosum, Blautia producta, Dorea Longicatena, Erysipelotrichaceae bacterium, and Clostridium orbiscindens .

In some aspects, at least a portion of the bacterial strains are in spore-form. In some aspects, the pharmaceutical composition further comprises a pharmaceutically acceptable excipient. In some aspects, the pharmaceutical composition is formulated for oral

administration. In some aspects, the pharmaceutical composition is in the form of a capsule. In some aspects, the pharmaceutical composition is formulated for delivery to the colon. In some aspects, the pharmaceutical composition further comprises a pH sensitive composition comprising one or more enteric polymers.

Aspects described herein provide pharmaceutical compositions comprising a purified bacterial mixture comprising the following bacterial strains: Clostridium bolteae,

Anaerostruncus colihominis, Sellimonas intestinalis, Clostridium symbiosum, Blautia producta, Dorea Longicatena, Erysipelotrichaceae bacterium, and Clostridium orbiscindens .

In some aspects, at least a portion of the bacterial strains are in spore-form. In some aspects, the pharmaceutical composition further comprises a pharmaceutically acceptable excipient.

In some aspects, the pharmaceutical composition is formulated for oral

administration. In some aspects, the pharmaceutical composition is in the form of a capsule. In some aspects, the pharmaceutical composition is formulated for delivery to the colon. In some aspects, the pharmaceutical composition further comprises a pH sensitive composition comprising one or more enteric polymers.

Aspects described herein providemethods of treating an infectious disease in a subject, the method comprising administering the pharmaceutical composition of any of the aspects described herein to the subject in an amount sufficient to treat the infectious disease. In some aspects, the infectious disease is Clostridium difficile infection.

The nucleic acid sequences of the 16S rDNA, or portion thereof, for the bacterial strains described herein are provided below:

This invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having," "containing," "involving," and variations thereof herein, is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless otherwise defined herein, scientific and technical terms used in connection with the present disclosure shall have the meanings that are commonly understood by those of ordinary skill in the art. Further, unless otherwise required by context, singular terms shall include pluralities and plural terms hall include the singular. The methods and techniques of the present disclosure are generally performed according to conventional methods well- known in the art. Generally, nomenclatures used in connection with, and techniques of biochemistry, enzymology, molecular and cellular biology, microbiology, virology, cell or tissue culture, genetics and protein and nucleic chemistry described herein are those well- known and commonly used in the art. The methods and techniques of the present disclosure are generally performed according to conventional methods well known in the art and as described in various general and more specific references that are cited and discussed throughout the present specification unless otherwise indicated.

The present invention is further illustrated by the following Examples, which in no way should be construed as further limiting. The entire contents of all of the references (including literature references, issued patents, published patent applications, and co-pending patent applications) cited throughout this application are hereby expressly incorporated by reference, in particular for the teaching that is referenced hereinabove. However, the citation of any reference is not intended to be an admission that the reference is prior art.

EXAMPLES

Example 1: Mouse model of C. difficile infection Mouse husbandry

Experiments were performed using C57BL/6J female mice purchased from Jackson Laboratories (Bar Harbor, ME) and housed in ventilated sterile cages. All animals were maintained in a specific-pathogen-free facility. Animals were acclimated to the vivarium for at least 3 days prior to study {i.e. , commencing antibiotic courses). For experiments involving C. difficile infection, mice were administered 10-10 ⁴ C. difficile VPI 10463 spores in 200 μΐ PBS by oral gavage. Experiments were performed in compliance with institutional guidelines and approved by the institution' s Institutional Animal Care and Use Committee. Sterile food and drinking water were provided to the animals Live Bio therapeutic Product (LBP) Preparation

Individual bacterial strains were isolated from fecal material obtained from healthy donors. The individual strains were struck out from 15% glycerol freezer stocks onto EG (Eggerth Gagnon) agar plates containing 5% horse blood in an anaerobic chamber and incubated for 24-48 hours at 37°C. Colonies were inoculated into pre-reduced liquid Peptone Yeast Glucose (PYG) media and grown for 24-48 hours until dense (static in the anaerobic chamber). Optical density (OD ₆ oo) of the cultures was assessed and live bio therapeutic product (LBP) cocktails were prepared inside an anaerobic chamber adjusting inputs based upon OD ₆ oo for equal CFU ratio cocktails in PBS (sterile, pre-treated). C. difficile colony forming unit (CFU) determination

Fecal pellets were collected, transported to an anaerobic chamber (<2 hours), and manually homogenized in 500 μL of pre-reduced PBS using a pipette tip and through repeated pipetting. Serial dilutions of fecal homogenates were prepared in pre-reduced PBS, 100 μL of which was spread onto cycloserine-cefoxitin-fructose agar with sodium

taurocholate (TCCFA) plates, and incubated anaerobically at 37°C. C. difficile CFUs were enumerated at 48 hours.

Murine susceptibility to C. difficile infection Groups of mice were evaluated for susceptibility to C. difficile using three antibiotic regimen protocols: (1) an antibiotic cocktail, (2) clindamycin administration, or (3) cefoperazone administration (Figures 2 and 3). The antibiotic cocktail consisted of kanamycin (0.4 mg/ml), gentamicin (0.035 mg/ml), colistin (0.056 mg/ml), metronidazole (0.215 mg/ml), vancomycin (0.045 mg/ml) in the drinking water from day -10 to day -3, followed by a single intraperitoneal clindamycin injection (200 μg/mouse). The clindamycin administration involved a single intraperitoneal injection of clindamycin (200 μg/mouse) on day -1. The notation of days is relative to day 0, the day of C. difficile infection.

Mice were treated with the indicated antibiotic regimen as described above and then infected with either 10 or 10 ⁴ C. difficile spores by oral gavage on day 0 (Figures 2 and 3). An additional experimental arm was added to the antibiotic treatment model in which mice were treated with vancomycin after C. difficile infection (Figure 4J; black triangles).

Mice were monitored daily following infection for mortality/survival (Figures 4A-4D) and weight (Figures 4E-4H). Fecal pellets were also collected daily and used for C. difficile CFU enumeration, presented as CFU/gram feces (Figures 4I-4L).

The groups of mice that received cefoperazone treatment had a significant change in weight (Figure 4H) and substantial C. difficile bacterial load in the fecal pellets (Figure 4L), even following administration with 10 C. difficile spores. These results indicated that the cefoperazone pre-treatment regimen provided a good model for C. difficile infection and for evaluating protection and/or treatment of C. difficile infection. In the absence of antibiotic treatment prior to infection, C. difficile infection was not established (Figure 41) and all mice survived (Figure 4 A) without significant change in body weight (Figure 4E).

Example 2: Live Biotherapeutic Product (LBP) preparations protect against C. difficile infection.

The following LBP compositions were evaluated for their capacity to protect and/or treat C. difficile infection:

Composition A,

Composition B,

Composition C,

Composition D,

Composition E (See e.g., Narushima et ah, Gut Microbes (2014) 5(3) 333-339), and Composition I: a mixture of Clostridium scindens, Pseudoflavonifractor capillosus and Blautia hansenii (Figure 5). In general, LBP cocktails were mixed in PYG media, and each mouse was administered a dose by oral gavage in 250 μL pre-reduced PBS (media-free). For composition E, bacteria were mixed in equal volumes (not equal ratios/CFUs) and administered in a 250 μL dose. Each LBP of Compositions A-D contained 10 ⁸ CFUs total in a 250 μL dose, comprised of 10 ⁷ CFU of each of the bacterial strains (Figure 1), for a total of 10 ⁸ CFU administered to each animal. Composition I contained a total of 10 ⁶ CFUs in a 250 μL· dose (approximately 333,000 of each of the 3 bacteria mixed).

Groups of mice were subjected to cefoperazone treatment, as described in Example 1, and were administered the indicated composition by oral gavage 2 days after the cessation of cefoperazone treatment. Twenty-four hours later, the mice were subjected to infection with 10 ⁴ C. difficile spores (Figure 5). Mice evaluated for survival/mortality (Figure 6), weight (Figures 7A-7I, and C. difficile CFUs (Figures 8A-8C). The results show that administration of Composition B prior to C. difficile infection is an effective protection and/or treatment against C. difficile infection.

Example 3: Composition B protects against and/or treats C. difficile infection.

Groups of 10- 12 week old mice were used in the C. difficile mouse model (Figure 9). Mice were subjected to cefoperazone treatment as described in Example 1. One group of mice was then administered Composition B (10 ⁸ CFU per mouse) administered by oral gavage, as described in Examples 1 and 2, 2 days after the cessation of cefoperazone treatment. The other group of mice did not receive a live biotherapeutic product after cefoperazone treatment (control). Twenty-four hours later, the mice were subjected to C. difficile infection (10 ⁴ C. difficile spores) and then evaluated for survival/mortality (Figure 10), weight (Figure 11), and C. difficile burden (CFUs per gram feces; Figure 12). These results confirm the results of Example 2 that demonstrate treatment with Composition B prior to C. difficile infection is an effective protection and/or treatment against C. difficile infection.

Example 4: LBP Composition F protects against and/or treat C. difficile infection.

Figure 13 shows the strains of live biotherapeutic product (LBP) Composition F. The genus-species classification indicates the closest species based on the sequence of the isolated strain. Figure 14 shows the classification by Clostridium cluster of the strains in

Composition F. Groups of mice were administered cefoperazone, as described in the Examples above, then administered LBPs or fecal matter transplant (FMT) from mice or human (Figure 15). Composition B was administered to the indicated groups on day -1; days -2 and -1; or on days -2, -1, 1, 2, and 3, relative to infection with 10 ⁴ C. difficile spores. Composition F was administered to the indicated groups on day -1 or on days -2, -1, 1, 2, and 3, relative to administration of C. difficile spores. Additional groups received FMT from mice or from humans (200μί of a 10% fecal sample s per mouse). Mice were then evaluated for survival/mortality (Figure 16), weight (Figures 17A-17H), and C. difficile burden (CFU/gram feces) on days 1, 3, 8 and 17 after infection (Figures 18A and 18B). The data demonstrate that Composition B, Composition F, and FMT protect against and/or treat C. difficile infection.

Example 5: LBP compositions protect against and/or treat C. difficile infection.

Figure 19 shows the strains of LBP Composition G. The genus-species notation indicates the closest species based on the sequence of the isolated strain. Composition G includes a subset of the strains of Composition F. Groups of mice were administered cefoperazone, as described in the Examples above, then administered the LBP:

Composition B;

Composition B-l (Composition B with Bacteroides added);

Composition B-2 (Composition B from which Flavonifractor plautii was removed and Bacteroides added);

Composition F;

Composition G;

Human fecal samples subjected to ethanol treatment;

Composition B subjected to ethanol treatment;

Composition B that had been frozen; or

Composition J: Clostridium innocuum, Clostridium bolteae and Clostridium symbiosum subjected to ethanol treatment;

(See also Figure 20).

The Bacteroides strain used in Composition B-l and B-2 was Bacteroides ovatus

(strain identifier 211-B; SEQ ID NO: 83).

Mice were challenged with C. difficile VPI 10463 spores (10 ⁴ ) and monitored daily (Day 0 to Day 7 post C. difficile infection) for survival/mortality (Figures 21 and 23) and change in weight (Figures 22A-22J and 24). These data show that the compositions protect against and/or treat C. difficile infection.

Example 6: LBP compositions protect against and/or treat C. difficile infection.

Groups of mice were subjected to cefoperazone treatment, as described above, then administered human fecal matter transplant, Composition B, Composition B + 4 spores, or Composition H (Figure 25). "Composition B + 4 spores" refers to Composition B plus the following four strains in spore form: Clostridium bolteae, Anaerotruncus colihominis, Clostridium symbiosum and Clostridium innocuum. Composition H contains the following six strains in spore form: Clostridium bolteae, Anaerotruncus colihominis, Clostridium symbiosum, Clostridium innocuum, Clostridium disporicum and Erysipelatoclostridium ramosum (Figure 26).

Mice were then challenged with C. difficile infection with 10 ⁴ C. difficile VPI 10463 spores and monitored for survival/mortality (Figures 27A and 28A), weight (Figures 27B and 28B). Mice that lost more than 20% body weight relative to baseline were included in mortality numbers in survival curves. The C. difficile burden was assessed by CFU in fecal pellets on days 1, 4 and 19 after infection (Figures 29A-29C).

These data indicate that Composition B as well as other compositions can improve survival in the cefoperazone-induced C. difficile mouse model and protect against and/or treat C. difficile infection.

Example 7: C. difficile toxin experiment

Vero cells, epithelial cells derived from African Green Monkey kidney epithelium, are sensitive to a variety of bacterial toxins, including C. difficile Toxin B. Exposure of cells to C. difficile Toxin B results in inhibition of the function of Rho, Rac, and Cdc42 leading to a decline in F-actin, a change in cell morphology {e.g., cell rounding), and eventually apoptosis.

To determine whether administration of bacterial compositions described herein has an effect on the production or activity of C. difficile Toxin B, a cellular assay was performed. Briefly, groups of mice were treated with cefoperazone, as described above, and administered human fecal matter transplant (FMT) ("4-3"); Composition B ("5-3"); Composition B plus four strains in spore form: Clostridium bolteae, Anaerotruncus colihominis, Clostridium symbiosum and Clostridium innocuum ("7-4"), or no treatment. Each of the groups of mice were then exposed to C. difficile infection with 10 ⁴ C. difficile spores. The groups of mice that did not receive a treatment after cefoperazone administration and prior to C. difficile infection are referred to as "2-1 (Cdiff)" and "2-4 (Cdiff)." An additional group of mice was not exposed to C. difficile as indicated by "N3 (Healthy)".

Fecal pellets were collected from each of the groups of mice, weighed, and

homogenized in PBS and normalized to a fixed concentration (-25 mg/mL). The samples were centrifuged to prepare a clarified supernatant, which was then diluted in 10-fold serial dilutions to produce a range from 1: 10 to 1 : 10 ^-6 dilutions of clarified pellet supernatant. Vero cell cultures were exposed to the diluted samples for approximately 18 hours, then visualized by phase contract microscopy to assess morphological changes (i.e., cell rounding) associated with C. difficile toxin exposure. The cells were scored based on the highest concentration of supernatant that did not yield a change in morphology (Figure 30). The samples from mice that had been treated with Composition B prior to C. difficile infection had reduced amounts of C. difficile Toxin B, as compared to samples from control mice that did not receive a treatment after cefoperazone administration and prior to C. difficile infection ("2-1 (Cdiff)" and "2-4 (Cdiff)") as well as compared to samples from mice that received FMT. Notably, the samples from mice that had been treated with Composition B also had reduced amounts of C. difficile Toxin B, as compared to samples from mice that had been treated with

Composition B with additional spores.

Example 8: In vitro Competition Between Compositions B and C. difficile

Composition B was assessed for its ability to suppress Clostridium difficile growth by an in vitro mixed culture competition assay. From glycerol freezer stocks, individual strains of Composition B, C. difficile (Cdiff), Clostridium bifermentans, and Bacteroides

thetaiotaomicron were struck out onto Eggerth-Gagnon agar plates with horse blood

(EG+HB). Single colonies of each of the strains were subsequently inoculated into brain heart infusion (BHI) liquid media and allowed to grow in pure culture for 24-48 hours.

Turbid cultures were sub-cultured then grown to exponential phase and finally diluted and combined to prepare a mixed culture with an optical density (OD ₆ oo) of 0.1. Exponential phase Cdiff culture was added to the mixed culture at a final concentration with an OD of 0.1. After the cultures were combined and incubated for 2-3 hours, samples were collected, serially diluted, and plated on Taurocholate-Cycloserine-Cefoxitin-Fructose Agar (TCCFA) plates to select for Cdiff growth. After 48-72 hours, the colony forming units (CFUs) of Cdiff in each competition experiment were determined by manual colony counting. EG+HB agar plates were prepared according to standard procedures and reduced in an anaerobic environment for at least 6-8 hours prior to use. Liquid BHI medium was obtained from BD Biosciences (Catalog # 211059, San Jose, CA), prepared according to the manufacturer's instructions, and reduced in an anaerobic environment for at least 18-24 hours prior to use. TCCFA plates were prepared according to standard procedures and reduced in an anaerobic environment for at least 6-8 hours prior to use. Clostridium difficile strain used in the experiments: American Type Culture Collection (ATCC) 43255.

Table 4: Composition B strains

Strains were struck out onto EG+HB agar plates from frozen glycerol stocks inside an anaerobic chamber for 48-72 hours. Single colonies were inoculated into 10 mL of BHI media and grown 24-48 hours at 37°C in the anaerobic chamber. Turbid cultures were then diluted to an OD of 0.1 and grown for 2-3 hours at 37°C in the anaerobic chamber.

Exponential phase cultures were diluted and combined at equivalent ODs. For the competition assay, each of the strains of Combination B (Table 4) were combined in equal parts, based on OD ₆₀₀ , to reach a final consortium OD ₆₀₀ of 0.1. C. bifermentans and B. thetaiotaomicron were setup to compete with Cdiff individually at an OD of 0.1. The OD600 for Cdiff in each of the mixed culture competition experiments was 0.1. After combination, the cultures were incubated for 2-3 hours at 37°C in the anaerobic chamber, then prepared for enumerations on Cdiff selective plates.

TCCFA plates are selective for Cdiff growth, and none of the Combination B strains, nor either of the control strains (C. bifermentans and B. thetaiotaomicron), grow on these plates. Inside an anaerobic chamber, a 100 μL sample of each competition culture was collected and serially diluted 1: 10 to reach a final dilution of lxlO ^-6 . Plates for CFU enumeration were prepared by spreading 100 μL of each of the lxlO ^-4 through lxlO ^-6 dilutions on TCCFA plates using sterile spreading loops. CFU plates were incubated for 48- 72 hours at 37°C in the anaerobic chamber. CFU enumeration was completed by manually counting colonies.

To determine the effect of competition, the ratio of CFUs determined for the competition samples and Cdiff alone was calculated and expressed as a percentage.

Inhibition of Cdiff growth by the Composition B cocktail was compared to the responses of B. thetaiotaomicron (negative control) and C. bifermentans (positive control). The results are shown in Table 5 and Figure 31.

Table 5: Summary Results for In Vitro Competition

Data is expressed as Cdiff CFU as a percentage of control. Each n is representative of a single biological replicate, independent of other measurements.

In in vitro competition, Composition B inhibited Cdiff growth to 15.1 + 16.2 % of control (absence of competing strain(s)). This result is consistent with the inhibition observed by the positive control, C. bifermentans, of 11.7 + 16.5 % of control. B.

thetaiotaomicron, a negative control, yielded a negligible effect on Cdiff growth at 65.6 + 43.8 % of control. Given the variability inherent in the assessment of CFU, inhibition of growth to < 25 % of control is considered to be significant inhibition and both the positive control and Composition B cocktail meet this threshold of activity. The Composition B consortium attenuated Cdiff growth in vitro comparable to the direct competition observed by C. bifermentans. Direct competition with B. thetaiotaomicron did not significantly inhibit Cdiff growth. Example 9: Determination of In Vitro Short-Chain Fatty Acid Production

Each strain of Composition B was assessed for individual short-chain fatty acid (SCFA) production in vitro. Composition B strains were grown in pure cultures inside an anaerobic chamber. Spent supernatant from liquid media cultures was harvested by centrifugation, filter sterilized, and then stored at < -70°C. Frozen clarified supernatant specimens were analyzed for short-chain fatty acids (SCFAs).

EG+HB agar plates (Eggerth-Gagnon agar plates with horse blood) were prepared according to standard methods and reduced in an anaerobic environment for at least 6-8 hours prior to use. Liquid PYG medium (pre-formulated, pre-reduced) was obtained from

Anaerobe Systems (Catalog#AS-822; Morgan Hill, CA).

Strains were struck out onto EG+HB agar plates from frozen 15% glycerol stocks inside an anaerobic chamber for 48 - 72 hours. Single colonies were inoculated into 7 mL PYG media and grown 24-48 hours at 37°C in the anaerobic chamber. Unless otherwise noted, when the optical density (OD) was > 0.2, samples were collected for CFU enumeration and filtration. Inside an anaerobic chamber, a 100 μL sample of turbid culture was collected and serially diluted 1: 10 to reach a final dilution of 1x10 ⁰⁶ . Plates for CFU enumeration were prepared by spreading 100 μL/dilution for the 1x10 ^-4 through 1x10 ^-6 dilutions on EG+HB agar plates using sterile glass beads. CFU plates were incubated for 48-72 hours in the anaerobic chamber. CFU enumeration was completed using the EasyCount 2 (bioMerieux SA, Marcy-l'Etoile, France). Immediately after samples of turbid cultures were collected for CFU enumeration, the remaining turbid cultures were centrifuged at approximately 1000 RCF for 10 minutes to pellet cellular debris. The clarified supematants were transferred to a 0.2 μm plate filter and vacuum filtered to remove any remaining particulates prior to bioanalysis. In the event of blockage in the filter plate, clarified supematants were manually filtered using 0.2 μιη syringe filters. Filtered supematants were aliquoted and stored at < - 70°C prior to bioanalysis of SCFAs.

To facilitate easier comparisons between samples, raw SCFA data μg/mL) was normalized by the logio of corresponding determined/estimated CFU for the culture. The results are depicted in Table 6 and Table 7 below.

Table 6: Enumerated CFUs for Composition B Strains

Table 7: SFCAs produced by individual Composition B strains

Seven strains of Composition B were found to produce significant quantities (> 1 μg/Log(CFU/mL)*mL) of the 2-carbon SCFA, acetate. One strain, (#211), produced substantial quantities of the 3-carbon SCFA, propionate. Four strains of Composition B produced substantial quantities of the 4-carbon SCFA, butyrate. Trace quantities (< 1 μg/Log(CFU/mL)*mL) of other SCFAs were also produced by the Composition B strains. Example 10: Composition B induces regulatory T cells (Trees)

Each of the bacterial strains of Composition B were grown to log phase, combined to a total dose of -10 ⁸ cfu per mouse. Germ-free mice were inoculated with Composition B or a negative control by oral gavage and sacrificed following four weeks of colonization. Lamina propria leukocytes were isolated from colonic tissue of individual mice by standard procedures and assessed by flow cytometry. The regulatory T cell content was evaluated as the percentage of Foxp3-positive cells among CD4+ T cells.

As shown in Figure 32, mice that were inoculated with Composition B were found to have significantly more regulatory T cells as compared to mice that were inoculated with the control.

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