Name: Facklamia sourekii Collins et al. 1999

Category: Species

Proposed as: sp. nov.

Etymology: sou.re’ki.i. N.L. gen. masc. n. sourekii, named after the late J. Sourek, curator of the CNCTC, Czech Republic

Gender: feminine

Type strain: ATCC 700629; CCUG 28783; CCUG 28783 A; CIP 105940; de Moor M13582; LMG 18982; SS 1019

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: Y17312 Analyse FASTA

Valid publication: Collins MD, Hutson RA, Falsen E, Sjoden B. Facklamia sourekii sp. nov., isolated from human sources. Int J Syst Bacteriol 1999; 49:635-638.

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 (and explicitly recommended for medical use)

Risk group: 2

• Synonyms:

  • Name	Kind
    Hutsoniella sourekii (Collins et al. 1999) Fotedar et al. 2021	homotypic synonym, validly published under the ICNP

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is -0.04818 (N = 6).
  • 😷 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: 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 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 6 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 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.

Parent taxon: Facklamia Collins et al. 1997

Assigned by: Collins MD, Hutson RA, Falsen E, Sjoden B. Facklamia sourekii sp. nov., isolated from human sources. Int J Syst Bacteriol 1999; 49:635-638.

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Record number: 783829