Name: Actinobacillus seminis (ex Baynes and Simmons 1960) Sneath and Stevens 1990

Category: Species

Proposed as: sp. nov., nom. rev.

Etymology: se’mi.nis. L. neut. n. semen (gen. seminis), seed; L. gen. neut. n. seminis, of seed, intended to mean of semen

Pronunciation (Latin), gender: … SE-mi-nis, masculine

Type strain: 5; A51; A51 and A65; A65; ATCC 15768; CCUG 27187; CIP 102633; DSM 22263; K3844-C; NCTC 10851; Simmons K3844-C

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M75047 Analyse FASTA

Valid publication: Sneath PH, Stevens M. Actinobacillus rossii sp. nov., Actinobacillus seminis sp. nov., nom. rev., Pasteurella bettii sp. nov., Pasteurella lymphangitidis sp. nov., Pasteurella mairi sp. nov., and Pasteurella trehalosi sp. nov. Int J Syst Bacteriol 1990; 40:148-153. 🇬🇧

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 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 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 69 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.
  • 🧍 Actinobacillus seminis (ex Baynes and Simmons 1960) Sneath and Stevens 1990 was also known as phenon 14 of Sneath and Stevens. Publication: Sneath PH, Stevens M. A numerical taxonomic study of Actinobacillus, Pasteurella and Yersinia. J Gen Microbiol 1985; 131:2711-2738.

Parent taxon: Actinobacillus Brumpt 1910 (Approved Lists 1980)

Assigned by: Sneath PH, Stevens M. Actinobacillus rossii sp. nov., Actinobacillus seminis sp. nov., nom. rev., Pasteurella bettii sp. nov., Pasteurella lymphangitidis sp. nov., Pasteurella mairi sp. nov., and Pasteurella trehalosi sp. nov. Int J Syst Bacteriol 1990; 40:148-153. 🇬🇧

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Record number: 783287