Name: Pasteurella haemolytica corrig. Newsom and Cross 1932 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: hae.mo.ly’ti.ca. Gr. neut. n. haîma, blood (Latin transliteration haema); N.L. fem. adj. lytica, able to loose, able to dissolve; from Gr. fem. adj. lytikê, able to loosen; N.L. fem. adj. haemolytica, blood dissolving, referring to the hemolysis seen on blood agar

Gender: feminine

Type strain: A&B; ATCC 33396; CCUG 12392; CCUG 408; CECT 5941; CIP 103426; DSM 10531; J.A. Watt 1266A&B; NBIMCC 8367; NCTC 9380

Conduct genome-based taxonomy at

16S rRNA gene: AF060699 Analyse FASTA

Effective publication: Newsome IE, Cross F. Some bipolar organisms found in pneumonia in sheep. Journal of the American Veterinary Medical Association 1932; 80:711-719.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Mannheimia haemolytica (Newsom and Cross 1932) Angen et al. 1999

Risk group: 2

• Synonyms:

  • Name	Kind
    Mannheimia haemolytica (Newsom and Cross 1932) Angen et al. 1999	homotypic synonym, validly published under the ICNP
    Pasteurella hemolytica Newsom and Cross 1932 (Approved Lists 1980)	other spelling of name, inaccurate spelling

• Notes:
  • ❗ Pasteurella haemolytica is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Pasteurella.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "biovar T: 1 animal pathogen - biological class of risk animal: 2; default: 1 animal pathogen - biological class of risk animal: 2; var. ureae: 2 human pathogen". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "biotype T: 1 Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2; var. ureae: 2 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".
  • 🎓 Name mentioned 1202 times in PubMed until 2024-03-27.
  • 🧍 On the Approved Lists of Bacterial Names, and on the Approved Lists of Bacterial Names (Amended Edition), this nomenclatural name is incorrectly cited as Pasteurella haemolytica Newsome (sic) and Cross 1932. Publication: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.
  • 🧍 The strains of Pasteurella haemolytica biovar T have been named Pasteurella trehalosi Sneath and Stevens 1990. 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.

Parent taxon: Pasteurella Trevisan 1887 (Approved Lists 1980)

Assigned by: Newsome IE, Cross F. Some bipolar organisms found in pneumonia in sheep. Journal of the American Veterinary Medical Association 1932; 80:711-719.

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Record number: 779180