Species "Ehrlichia ruminantium"

Name: "Ehrlichia ruminantium" (Cowdry 1925) Dumler et al. 2001

Category, proposed as: species, comb. nov.

Basonym: "Rickettsia ruminantium" Cowdry 1925

Etymology: ru.mi.nan’ti.um. L. pres. part. ruminans, ruminating; N.L. gen. pl. n. ruminantium, of ruminants [probably better: ruminantiorum]

Pronunciation (Latin), gender: ehr-LI-k^hi-a ru-mi-NAN-ti-um, feminine

Nomenclatural type: no culture isolated; Welgevonden

Conduct genome-based taxonomy at

16S rRNA gene: X61659 Analyse FASTA

Original publication: Dumler JS, Barbet AF, Bekker CP, Dasch GA, Palmer GH, Ray SC, Rikihisa Y, Rurangirwa FR. Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia and Ehrlichia with Neorickettsia, descriptions of six new species combinations and designation of Ehrlichia equi and 'HGE agent' as subjective synonyms of Ehrlichia phagocytophila. Int J Syst Evol Microbiol 2001; 51:2145-2165. 🇺🇸

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 51, part 6 of the IJSEM. Int J Syst Evol Microbiol 2002; 52:5-6.

Nomenclatural status: not validly published

Taxonomic status: synonym (and no standing)

Correct name: Cowdria ruminantium (Cowdry 1925) Moshkovski 1947 (Approved Lists 1980)

Risk group: 2

• Synonyms:

  • Name	Kind
    "Rickettsia ruminantium" Cowdry 1925	homotypic synonym, not validly published, basonym of name in Approved Lists
    Cowdria ruminantium (Cowdry 1925) Moshkovski 1947 (Approved Lists 1980)	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: 3". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 3 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: Yes". — 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 2026-08-13. The full classification is: risk group = 2, note = "Z". — 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 271 times in PubMed until 2026-06-11.
  • 🧍 Considered not validly published. No culture deposited in a collection. The requirements for valid publication had changed as of 1 January 2001. Publication: Oren A, Arahal DR, Christensen H, Goker M, Manaia CM, Moore ERB. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2025 Revision). Int J Syst Evol Microbiol 2026; 76:6979. 🇮🇱

Parent taxon: Ehrlichia Moshkovski 1945 (Approved Lists 1980)

Assigned by: Dumler JS, Barbet AF, Bekker CP, Dasch GA, Palmer GH, Ray SC, Rikihisa Y, Rurangirwa FR. Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia and Ehrlichia with Neorickettsia, descriptions of six new species combinations and designation of Ehrlichia equi and 'HGE agent' as subjective synonyms of Ehrlichia phagocytophila. Int J Syst Evol Microbiol 2001; 51:2145-2165. 🇺🇸

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.783763Copy to clipboardLink copied to clipboard

Record number: 783763

• Previous versions:

  • Version	Date	JSON
    1	2026-03-31