Name: Brachybacterium faecium Collins et al. 1988

Category: Species

Proposed as: sp. nov.

Etymology: fae’ci.um. L. fem. n. faex (gen. faecis), feces, dregs; L. gen. fem. pl. n. faecium, of feces [incorrectly formed: should have been: faecum]

Pronunciation, gender: FA͡E-ki-um, neuter

Type strain: ATCC 43885; CCUG 32293; CIP 103333; DSM 4810; IEGM 403; IFO 14762; JCM 11609; NBRC 14762; NCIB 9860; NCIMB 9860; Schefferle 6-10; VKM Ac-1423

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X91032 Analyse FASTA

Valid publication: Collins MD, Brown J, Jones D. Brachybacterium faecium gen. nov., sp. nov., a coryneform bacterium from poultry deep litter. Int. J. Syst. Bacteriol. 1988; 38:45-48.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Emendations:
  • Nouioui et al. 2018 Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007. Oren A, Garrity GM. List of changes in taxonomic opinion no. 29. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:13-32.

• Notes:
  • 🥇 Nomenclatural type of the genus Brachybacterium Collins et al. 1988. Publication: Collins MD, Brown J, Jones D. Brachybacterium faecium gen. nov., sp. nov., a coryneform bacterium from poultry deep litter. Int. J. Syst. Bacteriol. 1988; 38:45-48.
  • 😷 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 Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — 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 11 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 other species in the genus.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Lapidus A, Pukall R, Labuttii K, Copeland A, Del Rio TG, Nolan M, Chen F, Lucas S, Tice H, Cheng JF, et al. Complete genome sequence of Brachybacterium faecium type strain (Schefferle 6-10). Stand Genomic Sci 2009; 1:3-11.

Parent taxon: Brachybacterium Collins et al. 1988

Assigned by: Collins MD, Brown J, Jones D. Brachybacterium faecium gen. nov., sp. nov., a coryneform bacterium from poultry deep litter. Int. J. Syst. Bacteriol. 1988; 38:45-48.

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Record number: 774148