Species Anaerostipes caccae

Name: Anaerostipes caccae Schwiertz et al. 2002

Category, proposed as: species, sp. nov.

Etymology: cac’cae. Gr. fem. n. kakkê, human ordure, feces; N.L. gen. fem. n. caccae, of feces

Pronunciation (Latin), gender: an-a-e-ro-STI-pes KAK-ka͡e, masculine

Type strain: DSM 14662; JCM 13470; L1-92; NCIMB 13811

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ270487 Analyse FASTA

Effective publication: Schwiertz A, Hold GL, Duncan SH, Gruhl B, Collins MD, Lawson PA, Flint HJ, Blaut M. Anaerostipes caccae gen. nov., sp. nov., a new saccharolytic, acetate-utilising, butyrate-producing bacterium from human faeces. Syst Appl Microbiol 2002; 25:46-51. 🇩🇪

IJSEM list: Anonymous. Validation list no. 87. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2002; 52:1437-1438.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Anaerostipes Schwiertz et al. 2002. Publication: Schwiertz A, Hold GL, Duncan SH, Gruhl B, Collins MD, Lawson PA, Flint HJ, Blaut M. Anaerostipes caccae gen. nov., sp. nov., a new saccharolytic, acetate-utilising, butyrate-producing bacterium from human faeces. Syst Appl Microbiol 2002; 25:46-51. 🇩🇪
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 57 times in PubMed until 2026-06-11.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded pathogenicity of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧

Parent taxon: Anaerostipes Schwiertz et al. 2002

Assigned by: Schwiertz A, Hold GL, Duncan SH, Gruhl B, Collins MD, Lawson PA, Flint HJ, Blaut M. Anaerostipes caccae gen. nov., sp. nov., a new saccharolytic, acetate-utilising, butyrate-producing bacterium from human faeces. Syst Appl Microbiol 2002; 25:46-51. 🇩🇪

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Record number: 773261