Species Brachyspira intermedia

Name: Brachyspira intermedia (Stanton et al. 1997) Hampson and La 2006

Category, proposed as: species, comb. nov.

Basonym: Serpulina intermedia Stanton et al. 1997

Etymology: in.ter.me’di.a. L. fem. adj. intermedia, that is between, intermediate, referring to the fact that the biochemical reactivities of this organism are intermediate between those characteristically possessed by B. hyodysenteriae and by B. innocens (Lee et al., 1993)

Pronunciation (Latin), gender: bra-k^hy-SPI-ra in-ter-ME-di-a, feminine

Type strain: ATCC 51140; CIP 105833; PWS/A

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EF488166 Analyse FASTA

Valid publication: Hampson DJ, La T. Reclassification of Serpulina intermedia and Serpulina murdochii in the genus Brachyspira as Brachyspira intermedia comb. nov. and Brachyspira murdochii comb. nov. Int J Syst Evol Microbiol 2006; 56:1009-1012. 🇦🇺

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 56, part 5 of the IJSEM. Int J Syst Evol Microbiol 2006; 56:1719-1720.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Synonyms:

  • Name	Kind
    "Serpulina intermedius" Lee et al. 1993	homotypic synonym, not validly published
    Serpulina intermedia Stanton et al. 1997	homotypic synonym, validly published under the ICNP

• Emendations:
  • Hördt et al. 2020 Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 1, note = "animal pathogen - biological class of risk animal: 2". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 2, note = "t". — 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 43 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.

Parent taxon: Brachyspira Hovind-Hougen et al. 1983

Assigned by: Hampson DJ, La T. Reclassification of Serpulina intermedia and Serpulina murdochii in the genus Brachyspira as Brachyspira intermedia comb. nov. and Brachyspira murdochii comb. nov. Int J Syst Evol Microbiol 2006; 56:1009-1012. 🇦🇺

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.783550Copy to clipboardLink copied to clipboard

Record number: 783550