Name: Cedecea davisae Grimont et al. 1981

Category: Species

Proposed as: sp. nov.

Etymology: da’vi.sae. N.L. gen. fem. n. davisae, named to honor Betty Davis, the American bacteriologist of the Enteric Bacteriology Laboratories, Centers for Disease Control and Prevention, Atlanta, Georgia, who made many contributions to the biochemical and serological identification of Enterobacteriaceae and Vibrionaceae

Pronunciation (Latin), gender: … DA-wi-sa͡e, feminine

Type strain: 005; ATCC 33431; CCUG 12370; CDC 3278-77; CIP 80.34; DSM 4568; JCM 1685; LMG 7862; NCTC 13724

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF493976 Analyse FASTA

Valid publication: Grimont PAD, Grimont F, Farmer Iii JJ, Asbury MA. Cedecea davisae gen. nov., sp. nov. and Cedecea lapagei sp. nov., new Enterobacteriaceae from clinical specimens. Int. J. Syst. Bacteriol. 1981; 31:317-326.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 2

• Notes:
  • 🥇 Nomenclatural type of the genus Cedecea Grimont et al. 1981. Publication: Grimont PAD, Grimont F, Farmer Iii JJ, Asbury MA. Cedecea davisae gen. nov., sp. nov. and Cedecea lapagei sp. nov., new Enterobacteriaceae from clinical specimens. Int. J. Syst. Bacteriol. 1981; 31:317-326.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - 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. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 2, note = "P650 = v". — 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 21 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. 🇬🇧
  • 🧍 In the paper by Grimont et al. 1981 the type strain ATCC 33431 is incorrectly cited as ATCC 3343. Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592. 🇫🇷

Parent taxon: Cedecea Grimont et al. 1981

Assigned by: Grimont PAD, Grimont F, Farmer Iii JJ, Asbury MA. Cedecea davisae gen. nov., sp. nov. and Cedecea lapagei sp. nov., new Enterobacteriaceae from clinical specimens. Int. J. Syst. Bacteriol. 1981; 31:317-326.

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Record number: 774539