Name: Citrobacter rodentium Schauer et al. 1996

Category: Species

Proposed as: sp. nov.

Etymology: ro.den’ti.um. L. pres. part. rodens, gnawing; N.L. gen. masc./fem. pl. n. rodentium, of rodents (gnawing animals)

Pronunciation (Latin), gender: ki-tro-BAK-ter ro-DEN-ti-um, masculine

Type strain: ATCC 51116; CCUG 30795; CDC 1843-73; CIP 104675; DSM 16636

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF025363 Analyse FASTA

Effective publication: Schauer DB, Zabel BA, Pedraza IF, O'Hara CM, Steigerwalt AG, Brenner DJ. Genetic and biochemical characterization of Citrobacter rodentium sp. nov. J Clin Microbiol 1995; 33:2064-2068. 🇺🇸

IJSEM list: Anonymous. Validation list no. 56. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1996; 46:362-363.

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 = 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, 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 1100 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. 🇬🇧
  • 🧍 Citrobacter rodentium Schauer et al. 1996 was previously known as Citrobacter sp. biovar 4280 and Citrobacter genomospecies 9. Publication: Werkman CH, Gillen GF. Bacteria Producing Trimethylene Glycol. J Bacteriol 1932; 23:167-182.

Parent taxon: Citrobacter Werkman and Gillen 1932 (Approved Lists 1980)

Assigned by: Schauer DB, Zabel BA, Pedraza IF, O'Hara CM, Steigerwalt AG, Brenner DJ. Genetic and biochemical characterization of Citrobacter rodentium sp. nov. J Clin Microbiol 1995; 33:2064-2068. 🇺🇸

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Record number: 774754