Name: Actinobacillus equuli subsp. equuli (van Straaten 1918) Christensen et al. 2002

Category: Subspecies

Proposed as: subsp. nov.

Basonym: "Bacillus equuli" van Straaten 1918

Etymology: e.qu.u’li. L. gen. masc. n. equuli, of a foal

Gender: masculine

Type strain: ATCC 19392; CCUG 2041; CIP 103284; DSM 19655; JCM 2432; LMG 3736; NBIMCC 555; NCTC 8529

See detailed strain information at

Valid publication: Christensen H, Bisgaard M, Olsen JE. Reclassification of equine isolates previously reported as Actinobacillus equuli, variants of A. equuli, Actinobacillus suis or Bisgaard taxon 11 and proposal of A. equuli subsp. equuli subsp. nov. and A. equuli subsp. haemolyticus subsp. nov. Int J Syst Evol Microbiol 2002; 52:1569-1576.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 52, part 5 of the IJSEM. Int J Syst Evol Microbiol 2003; 53:3-5.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 2

• Notes:
  • 🙋 This subspecies could be automatically created (rule 40d) by the valid publication of Actinobacillus equuli subsp. haemolyticus Christensen et al. 2002 but an explicit description was also provided. Publication: Christensen H, Bisgaard M, Olsen JE. Reclassification of equine isolates previously reported as Actinobacillus equuli, variants of A. equuli, Actinobacillus suis or Bisgaard taxon 11 and proposal of A. equuli subsp. equuli subsp. nov. and A. equuli subsp. haemolyticus subsp. nov. Int J Syst Evol Microbiol 2002; 52:1569-1576.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, 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 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".
  • 🧍 The original autorship, (van Straaten 1918) Haupt 1934, was corrected according to the new Rule 40d. Publication: Oren A, Arahal DR, Goker M, Moore ERB, Rossello-Mora R, Sutcliffe IC. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2022 Revision). Int J Syst Evol Microbiol 2023; 73:5585.

Parent taxon: Actinobacillus equuli (van Straaten 1918) Haupt 1934 (Approved Lists 1980)

Assigned by: Christensen H, Bisgaard M, Olsen JE. Reclassification of equine isolates previously reported as Actinobacillus equuli, variants of A. equuli, Actinobacillus suis or Bisgaard taxon 11 and proposal of A. equuli subsp. equuli subsp. nov. and A. equuli subsp. haemolyticus subsp. nov. Int J Syst Evol Microbiol 2002; 52:1569-1576.

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Record number: 783278