Name: Anaerobiospirillum thomasii Malnick 1997

Category: Species

Proposed as: sp. nov.

Etymology: tho.ma’si.i. N.L. gen. masc. n. thomasii, of Thomas, named after M.E.M. Thomas (Public Health Laboratory Service, 1947-1984), whose interest in and enthusiasm for uncommon medical bacterial infections led to the initiation of this study

Pronunciation (Latin), gender: an-a-e-ro-bi-o-spi-RIL-lum t^ho-MA-si-i, neuter

Type strain: A273/88; ATCC 700432; CCUG 46380; DSM 11806; NCTC 12467

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ420985 Analyse FASTA

Valid publication: Malnick H. Anaerobiospirillum thomasii sp. nov., an anaerobic spiral bacterium isolated from the feces of cats and dogs and from diarrheal feces of humans, and emendation of the genus Anaerobiospirillum. Int J Syst Bacteriol 1997; 47:381-384.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 47, part 2 of the IJSB. Int J Syst Bacteriol 1997; 47:917-919.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• 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 = 2. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "ht". — 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 3 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 risk group 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. 🇬🇧
  • 🧍 Anaerobiospirillum thomasii Malnick 1997 was previously known as Anaerobiospirillum-like. Publication: Davis CP, Cleven D, Brown J, Balish E. Anaerobiospirillum, a new genus of spiral-shaped bacteria. International Journal of Systematic Bacteriology 1976; 26:498-504.

Parent taxon: Anaerobiospirillum Davis et al. 1976 (Approved Lists 1980)

Assigned by: Malnick H. Anaerobiospirillum thomasii sp. nov., an anaerobic spiral bacterium isolated from the feces of cats and dogs and from diarrheal feces of humans, and emendation of the genus Anaerobiospirillum. Int J Syst Bacteriol 1997; 47:381-384.

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.773239Copy to clipboardLink copied to clipboard

Record number: 773239