Name: Oribacterium parvum Sizova et al. 2014

Category: Species

Proposed as: sp. nov.

Etymology: par’vum. L. neut. adj. parvum, small, little

Pronunciation (Latin), gender: … PAR-wum, neuter

Type strain: ACB1; ATCC BAA-2638; DSM 24637; HM-481

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: HM120210 Analyse FASTA

Valid publication: Sizova MV, Muller PA, Stancyk D, Panikov NS, Mandalakis M, Hazen A, Hohmann T, Doerfert SN, Fowle W, Earl AM, et al. Oribacterium parvum sp. nov. and Oribacterium asaccharolyticum sp. nov., obligately anaerobic bacteria from the human oral cavity, and emended description of the genus Oribacterium. Int J Syst Evol Microbiol 2014; 64:2642-2649. 🇺🇸

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 64, part 8 of the IJSEM. Int J Syst Evol Microbiol 2014; 64:3607-3609.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.19655 (N = 70).
  • 😷 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. — 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 2 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 a putative 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. 🇬🇧

Parent taxon: Oribacterium Carlier et al. 2004

Assigned by: Sizova MV, Muller PA, Stancyk D, Panikov NS, Mandalakis M, Hazen A, Hohmann T, Doerfert SN, Fowle W, Earl AM, et al. Oribacterium parvum sp. nov. and Oribacterium asaccharolyticum sp. nov., obligately anaerobic bacteria from the human oral cavity, and emended description of the genus Oribacterium. Int J Syst Evol Microbiol 2014; 64:2642-2649. 🇺🇸

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Record number: 792020