Species ***Bifidobacterium* *bifidum***

Name: Bifidobacterium bifidum (Tissier 1900) Orla-Jensen 1924 (Approved Lists 1980)

Category: Species

Proposed as: comb. nov.

Basonym: "Bacillus bifidus" Tissier 1900

Etymology: bi’fi.dum. L. neut. adj. bifidum, cleft, split, divided

Pronunciation (Latin), gender: … BI-fi-dum, neuter

Type strain: ATCC 29521; BCRC 14615; CCRC 14615; CCUG 18364; CCUG 45217; CGMCC 1.2212; CIP 56.7; DSM 20456; HAMBI 1380; IFO 14252; JCM 1255; LMG 11041; LMG 8810; NBIMCC 8744; NBRC 100015; NBRC 14252; NCDO 2715; NCFB 2715; NCIMB 702715; NCTC 13001; Ti Anaerobe Collection, Institut Pasteur Lille

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M38018 Analyse FASTA

Effective publication: Orla-Jensen S. Classification des bactéries lactiques. Lait 1924; 4:468-474.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

Synonyms:

Name	Kind
"Bacillus bifidus" Tissier 1900	homotypic synonym, not validly published, basonym of name in Approved Lists
"Bacterium bifidum" (Tissier 1900) Orla-Jensen 1919	homotypic synonym, not validly published

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 Bifidobacterium Orla-Jensen 1924 (Approved Lists 1980). Publication: Orla-Jensen S. Classification des bactéries lactiques. Lait 1924; 4:468-474.
- 😷 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 1303 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: Bifidobacterium Orla-Jensen 1924 (Approved Lists 1980)

Assigned by: Orla-Jensen S. Classification des bactéries lactiques. Lait 1924; 4:468-474.

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Record number: 774026

This LPSN page was printed on 2026-02-07 05:05:22

Species Bifidobacterium bifidum