Name: Weeksella massiliensis Sankar et al. 2017

Category: Species

Proposed as: sp. nov.

Etymology: mas.si.li.en’sis. L. fem. adj. massiliensis, of Massilia, the Latin name for Marseille, where strain FF8T was cultivated

Pronunciation, gender: mas-si-li-EN-sis, feminine

Type strain: CSUR P860; DSM 28259; FF8

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: HG931340 Analyse FASTA

Effective publication: Sankar SA, Lo CI, Fall B, Sambe-Ba B, Mediannikov O, Diallo I, Labas N, Faye N, Wade B, Raoult D, et al. Noncontiguous finished genome sequence and description of Weeksella massiliensis sp. nov. New Microbes New Infect 2015; 8:89-98.

IJSEM list: Oren A, Garrity GM. Validation list no. 176. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2017; 67:2075-2078.

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 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 1 time 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 genus.
  • 🧍 The phylogenetic position of this species was determined in a genome-scale analysis by García-López et al. (2019). Publication: Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083.

Parent taxon: Weeksella Holmes et al. 1987

Assigned by: Sankar SA, Lo CI, Fall B, Sambe-Ba B, Mediannikov O, Diallo I, Labas N, Faye N, Wade B, Raoult D, et al. Noncontiguous finished genome sequence and description of Weeksella massiliensis sp. nov. New Microbes New Infect 2015; 8:89-98.

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Record number: 795593