Name: Rahnella aquatilis Izard et al. 1981

Category: Species

Proposed as: sp. nov.

Etymology: a.qua’ti.lis. L. masc./fem. adj. aquatilis, living, growing, or found in water, aquatic

Gender: feminine

Type strain: 133; ATCC 33071; CCUG 14185; CIP 78.65; DSM 4594; HAMBI 1280; JCM 1683; LMG 2794

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ233426 Analyse FASTA

Effective publication: Izard D, Gavini F, Trinel PA, Leclerc H. Rahnella aquatilis, nouveau membre de la famille des Enterobacteriaceae. Ann. Microbiol. 1979; 130A:163-177.

IJSEM list: Anonymous. Validation list no. 7. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1981; 31:382-383.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Rahnella Izard et al. 1981. Publication: Izard D, Gavini F, Trinel PA, Leclerc H. Rahnella aquatilis, nouveau membre de la famille des Enterobacteriaceae. Ann. Microbiol. 1979; 130A:163-177.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1, note = "PIIC". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "+".
  • 🎓 Name mentioned 186 times in PubMed until 2024-03-27.
  • 🧍 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 2022; 168:0.
  • 🧍 Rahnella aquatilis Izard et al. 1981 was previously known as Enterobacter cloacae-like class H2. Publication: Hormaeche E, Edwards PR. A proposed genus Enterobacter. International Bulletin of Bacteriological Nomenclature and Taxonomy 1960; 10:71-74.

Parent taxon: Rahnella Izard et al. 1981

Assigned by: Izard D, Gavini F, Trinel PA, Leclerc H. Rahnella aquatilis, nouveau membre de la famille des Enterobacteriaceae. Ann. Microbiol. 1979; 130A:163-177.

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Record number: 780310