Name: Campylobacter jejuni subsp. doylei Steele and Owen 1988

Category: Subspecies

Proposed as: subsp. nov.

Etymology: doy’le.i. N.L. gen. masc. n. doylei, of Doyle, named in honor of L.P. Doyle, an American veterinarian

Gender: masculine

Type strain: 093; ATCC 49349; CCUG 24567; CIP 103751; IMVS 1141; LMG 8843

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: DQ174144 Analyse FASTA

Valid publication: Steele TW, Owen RJ. Campylobacter jejuni subsp. doylei subsp. nov., a subspecies of nitrate-negative campylobacters isolated from human clinical specimens. Int. J. Syst. Bacteriol. 1988; 38:316-318.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 2

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.17551 (N = 5).
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — 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.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683.
  • 🧍 Members of the Subcommittee on the taxonomy of Campylobacter and related bacteria had noted that the specific epithet jejuni was erroneously formed. This required correction of the spelling of the epithet or, alternatively, correction of the etymology. The subcommittee members reached a consensus to correct the etymology of the specific epithet jejuni. The correct etymology is: je.ju'ni. N.L. gen. neut. n. jejuni, of the jejunum. Publication: Vandamme P, On SL. Recommendations of the subcommittee on the taxonomy of Campylobacter and related bacteria. Int J Syst Evol Microbiol 2001; 51:719-721.

Parent taxon: Campylobacter jejuni (Jones et al. 1931) Véron and Chatelain 1973 (Approved Lists 1980)

Assigned by: Steele TW, Owen RJ. Campylobacter jejuni subsp. doylei subsp. nov., a subspecies of nitrate-negative campylobacters isolated from human clinical specimens. Int. J. Syst. Bacteriol. 1988; 38:316-318.

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Record number: 783594