Name: Yersinia pseudotuberculosis (Pfeiffer 1889) Smith and Thal 1965 (Approved Lists 1980)

Category: Species

Proposed as: comb. nov.

Basonym: "Bacillus pseudotuberkulosis" Pfeiffer 1889

Etymology: pseu.do.tu.ber.cul.o’sis. Gr. masc./fem. adj. pseudês, false; L. neut. n. tuberculum, a small swelling, bump, protuberance, or tubercle; N.L. gen. fem. n. tuberculosis, tuberculosis; N.L. gen. fem. n. pseudotuberculosis, of false tuberculosis

Pronunciation (Latin), gender: … pse͡u-do-tu-ber-kul-O-sis, feminine

Type strain: ATCC 29833; CCUG 5855; CIP 55.85; DSM 8992; JCM 1676; NCTC 10275

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF366375 Analyse FASTA

Effective publication: Smith JE, Thal E. A TAXONOMIC STUDY OF THE GENUS PASTEURELLA USING A NUMERICAL TECHNIQUE. Acta Pathol Microbiol Scand 1965; 64:213-223.

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: correct name (and explicitly recommended for medical use)

Risk group: 2

• Synonyms:

  • Name	Kind
    Pasteurella lymphangitidis Sneath and Stevens 1990	heterotypic synonym, validly published under the ICNP
    "Bacillus pseudotuberkulosis" Pfeiffer 1889	homotypic synonym, not validly published, basonym of name in Approved Lists

• Notes:
  • ⏰ According to Gaillot et al. (2013), this species is an earlier heterotypic synonym of Pasteurella lymphangitidis Sneath and Stevens 1990. Publication: Gaillot O, Lemenand O, Marceau M, Simonet M. Proposed reclassification of Pasteurella lymphangitidis Sneath & Stevens 1990 as Yersinia pseudotuberculosis. Int J Syst Evol Microbiol 2013; 63:3927-3929. 🇫🇷
  • 🧬 The phylogenomic assignment score of this taxon is 0.19975 (N = 2).
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human and 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 = 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 = "Z". — The risk group for France has been imported on 2024-08-30. The full classification is: risk group = 2. — The risk group for Sweden has been imported on 2024-02-05. The full classification is: risk group = 2. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 2, note = "P650 = v". — The risk group for United Kingdom has been imported on 2024-01-31. The full classification is: risk group = 2. — 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 2221 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.
  • 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 The subspecies name Yersinia pseudotuberculosis subsp. pestis (Lehmann and Neumann 1896) Bercovier et al. 1981 is placed on the list of nomina rejicienda. Publication: Bercovier H, Mollaret HH, Alonso JM, Brault J, Fanning GR, Steigerwalt AG, Brenner DJ. Intra- and interspecies relatedness of Yersinia pestis by DNA hybridization and its relationship to Yersinia pseudotuberculosis. Curr. Microbiol. 1980; 4:225-229.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Yersinia pseudotuberculosis subsp. pestis (Lehmann and Neumann 1896) Bercovier et al. 1981	validly published under the ICNP, rejected name	synonym
    Yersinia pseudotuberculosis subsp. pseudotuberculosis (Pfeiffer 1889) Bercovier et al. 1981	validly published under the ICNP	synonym of its species

Parent taxon: Yersinia van Loghem 1944 (Approved Lists 1980)

Assigned by: Smith JE, Thal E. A TAXONOMIC STUDY OF THE GENUS PASTEURELLA USING A NUMERICAL TECHNIQUE. Acta Pathol Microbiol Scand 1965; 64:213-223.

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Record number: 783202