Name: Megasphaera massiliensis Padmanabhan et al. 2016

Category: Species

Proposed as: sp. nov.

Etymology: mas.si.li.en’sis. L. fem. adj. massiliensis, of Massilia, the Latin name of Marseille where was cultivated strain NP3T

Pronunciation, gender: mas-si-li-EN-sis, feminine

Type strain: CSUR P245; DSM 26228; NP3

See detailed strain information at

16S rRNA gene: JX424772 Analyse FASTA

Effective publication: Padmanabhan R, Lagier JC, Dangui NP, Michelle C, Couderc C, Raoult D, Fournier PE. Non-contiguous finished genome sequence and description of Megasphaera massiliensis sp. nov. Stand Genomic Sci 2013; 8:525-538. 🇫🇷

IJSEM list: Oren A, Garrity GM. Validation list no. 168. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2016; 66:1603-1606.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Notes:
  • 😷 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 4 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 genus.

Parent taxon: Megasphaera Rogosa 1971 (Approved Lists 1980)

Assigned by: Padmanabhan R, Lagier JC, Dangui NP, Michelle C, Couderc C, Raoult D, Fournier PE. Non-contiguous finished genome sequence and description of Megasphaera massiliensis sp. nov. Stand Genomic Sci 2013; 8:525-538. 🇫🇷

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Record number: 793911