Name: Taylorella equigenitalis (Taylor et al. 1983) Sugimoto et al. 1984

Category: Species

Proposed as: comb. nov.

Basonym: Haemophilus equigenitalis Taylor et al. 1983

Etymology: e.qui.ge.ni.ta.lis. L. masc. n. equus, horse; L. adj. genitalis -is -e, of or belonging to generation or birth, genital; N.L. fem. adj. equigenitalis, pertaining to horse genitalia

Gender: feminine

Type strain: ATCC 35865; CCUG 10786; CIP 79.07; DSM 10668; LMG 6222; NCTC 11184; Strain 61717/77

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF408197 Analyse FASTA

Effective publication: Sugimoto C, Isayama Y, Sakazaki R, Kuramochi S. Transfer of Haemophilus equigenitalis Taylor et al. 1978 to the genus Taylorella gen. nov. as Taylorella equigenitalis comb. nov. Curr. Microbiol. 1983; 9:155-162.

IJSEM list: Anonymous. Validation list no. 16. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1984; 34:503-504.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Synonyms:

  • Name	Kind
    Haemophilus equigenitalis Taylor et al. 1983	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Taylorella Sugimoto et al. 1984. Publication: Sugimoto C, Isayama Y, Sakazaki R, Kuramochi S. Transfer of Haemophilus equigenitalis Taylor et al. 1978 to the genus Taylorella gen. nov. as Taylorella equigenitalis comb. nov. Curr. Microbiol. 1983; 9:155-162.
  • 😷 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 - Considerations for containment: CL3 containment is required for in vivo work with equine species. CL2 containment is required for in vitro work or in vivo work with non-equine species.". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2, note = "PV". — The risk group for Germany has been imported on 2023-10-29. 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 124 times in PubMed until 2025-06-04.
  • 🫡 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. This name is not taxonomically suspended any more in favour of Haemophilus equigenitalis Taylor et al. 1983. Publication: Taylor CE, Rosenthal RO, Brown DF, Lapage SP, Hill LR, Legros RM. The causative organism of contagious equine metritis 1977: proposal for a new species to be known as Haemophilus equigenitalis. Equine Vet J 1978; 10:136-144. Anonymous. Validation list no. 10. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1983; 33:438-440.

Parent taxon: Taylorella Sugimoto et al. 1984

Assigned by: Sugimoto C, Isayama Y, Sakazaki R, Kuramochi S. Transfer of Haemophilus equigenitalis Taylor et al. 1978 to the genus Taylorella gen. nov. as Taylorella equigenitalis comb. nov. Curr. Microbiol. 1983; 9:155-162.

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Record number: 782393