Name: Williamsia muralis Kämpfer et al. 1999

Category: Species

Proposed as: sp. nov.

Etymology: mu.ra’lis. L. masc./fem. adj. muralis, pertaining or belonging to wall(s)

Gender: feminine

Type strain: CIP 106979; DSM 44343; IFM 10085; JCM 10676; KCTC 9830; MA140/96

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: Y17384 Analyse FASTA

Valid publication: Kampfer P, Andersson MA, Rainey FA, Kroppenstedt RM, Salkinoja-Salonen M. Williamsia muralis gen. nov., sp. nov., isolated from the indoor environment of a children's day care centre. Int J Syst Bacteriol 1999; 49:681-687.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 49, part 2 of the IJSB. Int J Syst Bacteriol 1999; 49:937-939.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Williamsia Kämpfer et al. 1999. Publication: Kampfer P, Andersson MA, Rainey FA, Kroppenstedt RM, Salkinoja-Salonen M. Williamsia muralis gen. nov., sp. nov., isolated from the indoor environment of a children's day care centre. Int J Syst Bacteriol 1999; 49:681-687.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 8 times in PubMed until 2024-03-28.
  • 🧍 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.
  • 🧍 In our database until 2005 erroneously listed as Williamsia murale. — Leibniz Institute DSMZ. Prokaryotic Nomenclature Up-to-date, 2018-12-11.

Parent taxon: Williamsia Kämpfer et al. 1999

Assigned by: Kampfer P, Andersson MA, Rainey FA, Kroppenstedt RM, Salkinoja-Salonen M. Williamsia muralis gen. nov., sp. nov., isolated from the indoor environment of a children's day care centre. Int J Syst Bacteriol 1999; 49:681-687.

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Record number: 783106