Name: Leptotrichia trevisanii Tee et al. 2002

Category: Species

Proposed as: sp. nov.

Etymology: tre.vi.sa’ni.i. N.L. gen. masc. n. trevisanii, of Trevisan, who proposed the genus Leptotrichia in 1879

Pronunciation (Latin), gender: … tre-wi-SA-ni-i, feminine

Type strain: ATCC 700907; DSM 22070; "Wee Tee" 1999

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF206305 Analyse FASTA

Effective publication: Tee W, Midolo P, Janssen PH, Kerr T, Dyall-Smith ML. Bacteremia due to Leptotrichia trevisanii sp. nov. Eur J Clin Microbiol Infect Dis 2001; 20:765-769. 🇦🇺

IJSEM list: Anonymous. Validation list no. 85. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2002; 52:685-690.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Notes:
  • 😷 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 Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "+". — 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 13 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 pathogenicity 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. 🇬🇧
  • 🧍 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. 🇺🇸
  • 🧍 At the time of publication, the type strain was not deposited in two publicly accessible service collections in different countries, and Leptotrichia trevisanii Tee et al. 2002 was not validly published [Rules 27(3) and 30]. However, according to the Judicial Opinion 81, Leptotrichia trevisanii Tee et al. 2002 is now considered to be validly published, since deposit in a second culture collection in a different country has been documented. Publication: Euzeby JP, Tindall BJ. Status of strains that contravene Rules 27(3) and 30 of the Bacteriological Code. Request for an opinion. Int J Syst Evol Microbiol 2004; 54:293-301. 🇫🇷
  • 🧍 On Validation List no. 85, the last author, Dyall-Smith ML, is missing. — Dyall-Smith ML. Personal communication, 2010-01-08.

Parent taxon: Leptotrichia Trevisan 1879 (Approved Lists 1980)

Assigned by: Tee W, Midolo P, Janssen PH, Kerr T, Dyall-Smith ML. Bacteremia due to Leptotrichia trevisanii sp. nov. Eur J Clin Microbiol Infect Dis 2001; 20:765-769. 🇦🇺

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Record number: 784152