Species Klebsiella oxytoca

Name: Klebsiella oxytoca (Flügge 1886) Lautrop 1956 (Approved Lists 1980)

Category, proposed as: species, comb. nov.

Basonym: "Bacillus oxytocus" Flügge 1886

Etymology: o.xy’to.ca. Gr. masc. adj. oxys, sour, acid; Gr. masc. n. tokos, producing; N.L. fem. adj. oxytoca, acid-producing

Pronunciation (Latin), gender: kleb-si-EL-la o-XY-to-ka, feminine

Type strain: ATCC 13182; CCUG 15717; CIP 103434; DSM 5175; HAMBI 1301; JCM 1665; LMG 3055; NBRC 102593

Conduct genome-based taxonomy at

16S rRNA gene: AB681870 Analyse FASTA

Effective publication: Lautrop H. Gelatin-liquefying Klebsiella strains (Bacterium oxytocum (Flugge) ). Acta Pathol Microbiol Scand 1956; 39:375-384.

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
    "Bacillus oxytocus" Flügge 1886	homotypic synonym, not validly published, basonym of name in Approved Lists

• Notes:
  • 😷 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 2026-08-13. The full classification is: risk group = 2, note = "ht". — 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 2279 times in PubMed until 2026-06-11.
  • 🙆 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. 🇬🇧

Parent taxon: Klebsiella Trevisan 1885 (Approved Lists 1980)

Assigned by: Lautrop H. Gelatin-liquefying Klebsiella strains (Bacterium oxytocum (Flugge) ). Acta Pathol Microbiol Scand 1956; 39:375-384.

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Record number: 777149