Name: Ureaplasma parvum Robertson et al. 2002

Category: Species

Proposed as: sp. nov.

Etymology: par’vum. L. neut. adj. parvum, small, referring to its significantly smaller genome sizes compared to Ureaplasma urealyticum

Pronunciation, gender: PAR-wum, neuter

Type strain: 27; ATCC 27815; NCTC 11736

Conduct genome-based taxonomy at

16S rRNA gene: AF073456 Analyse FASTA

Valid publication: Robertson JA, Stemke GW, Davis JWJ, Harasawa R, Thirkell D, Kong F, Shepard MC, Ford DK. Proposal of Ureaplasma parvum sp. nov. and emended description of Ureaplasma urealyticum (Shepard et al. 1974) Robertson et al. 2001. Int J Syst Evol Microbiol 2002; 52:587-597.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 52, part 2 of the IJSEM. Int J Syst Evol Microbiol 2002; 52:691-692.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Synonyms:

  • Name	Kind
    "Ureaplasma parvum" Kong et al. 1999	homotypic synonym, not validly published

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.38343 (N = 1).
  • 😷 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 = 2. — The risk group for France has been imported on 2024-08-30. The full classification is: risk group = 2. — The risk group for United Kingdom has been imported on 2024-01-31. The full classification is: risk group = 2. — 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 496 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.
  • 🧍 In the paper by Robertson et al. 2002, Ureaplasma parvum is cited as Ureaplasma parvum Robertson et al. 2001 (sic). Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592.

Parent taxon: Ureaplasma Shepard et al. 1974 (Approved Lists 1980)

Assigned by: Robertson JA, Stemke GW, Davis JWJ, Harasawa R, Thirkell D, Kong F, Shepard MC, Ford DK. Proposal of Ureaplasma parvum sp. nov. and emended description of Ureaplasma urealyticum (Shepard et al. 1974) Robertson et al. 2001. Int J Syst Evol Microbiol 2002; 52:587-597.

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Record number: 785137