Name: Anaerococcus tetradius (Ezaki et al. 1983 ex Choukévitch 1911) Ezaki et al. 2001

Category: Species

Proposed as: comb. nov.

Basonym: Peptostreptococcus tetradius (ex Choukévitch 1911) Ezaki et al. 1983

Etymology: te.tra.di.us. N.L. masc. adj. tetradius, occurring in groups of four

Gender: masculine

Type strain: ATCC 35098; CCM 3634; CCUG 17637; CIP 103927; DSM 2951; GIFU 7672; JCM 1964; LMG 14264

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF542234 Analyse FASTA

Valid publication: Ezaki T, Kawamura Y, Li N, Li ZY, Zhao L, Shu S. Proposal of the genera Anaerococcus gen. nov., Peptoniphilus gen. nov. and Gallicola gen. nov. for members of the genus Peptostreptococcus. Int J Syst Evol Microbiol 2001; 51:1521-1528.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 51, part 4 of the IJSEM. Int J Syst Evol Microbiol 2001; 51:1621-1623.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 2

• Synonyms:

  • Name	Kind
    Peptostreptococcus tetradius (ex Choukévitch 1911) Ezaki et al. 1983	homotypic synonym, validly published under the ICNP

• Notes:
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "+". — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 1, note = "P650 = v". — 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 10 times in PubMed until 2024-03-27.
  • 🧍 According to Bartlett et al. (2022), no evidence of human infection was found for this species. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology 2022; 168:0.

Parent taxon: Anaerococcus Ezaki et al. 2001

Assigned by: Ezaki T, Kawamura Y, Li N, Li ZY, Zhao L, Shu S. Proposal of the genera Anaerococcus gen. nov., Peptoniphilus gen. nov. and Gallicola gen. nov. for members of the genus Peptostreptococcus. Int J Syst Evol Microbiol 2001; 51:1521-1528.

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Record number: 773248