Name: Megasphaera vaginalis Srinivasan et al. 2021

Category: Species

Proposed as: sp. nov.

Etymology: va.gi.na’lis. N.L. fem. adj. vaginalis, pertaining to the vagina

Pronunciation (Latin), gender: … wa-gi-NA-lis, feminine

Type strain: ATCC TSD-207; BV3C16-1; DSM 111203

Conduct genome-based taxonomy at

16S rRNA gene: JN809775 Analyse FASTA

Valid publication: Srinivasan S, Beamer MA, Fiedler TL, Austin MN, Sizova MV, Strenk SM, Agnew KJ, Gowda GAN, Raftery D, Epstein SS, et al. Megasphaera lornae sp. nov., Megasphaera hutchinsoni sp. nov., and Megasphaera vaginalis sp. nov.: novel bacteria isolated from the female genital tract. Int J Syst Evol Microbiol 2019; 71:0. 🇺🇸

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 71, part 3 of the IJSEM. Int J Syst Evol Microbiol 2021; 71:4812.

Nomenclatural status: validly published under the ICNP

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

• Notes:
  • 😡 This taxon name is a homonym of "Megasphaera vaginalis" Bordigoni et al. 2020.
  • 🎓 Name mentioned 3 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: Megasphaera Rogosa 1971 (Approved Lists 1980)

Assigned by: Srinivasan S, Beamer MA, Fiedler TL, Austin MN, Sizova MV, Strenk SM, Agnew KJ, Gowda GAN, Raftery D, Epstein SS, et al. Megasphaera lornae sp. nov., Megasphaera hutchinsoni sp. nov., and Megasphaera vaginalis sp. nov.: novel bacteria isolated from the female genital tract. Int J Syst Evol Microbiol 2019; 71:0. 🇺🇸

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Record number: 18768