Name: Bifidobacterium animalis subsp. animalis (Mitsuoka 1969) Masco et al. 2004 (Approved Lists 1980)

Category: Subspecies

Proposed as: subsp. nov.

Basonym: "Bifidobacterium longum subsp. animalis" Mitsuoka 1969

Etymology: a.ni.ma’lis. L. gen. n. animalis, of a living being, an animal (also as adjective)

Pronunciation (Latin), gender: bi-fi-do-bak-TE-ri-um a-ni-MA-lis a-ni-MA-lis, neuter

Type strain: ATCC 25527; BCRC 14668; CCRC 14668; CCUG 24606; CCUG 33907; CGMCC 1.2268; CIP 105419; DSM 20104; HAMBI 112; JCM 1190; KCTC 3125; LMG 10508; NBIMCC 8820; NCDO 2242; NCFB 2242; NCIMB 702242; R101-8

See detailed strain information at

Effective publication: Masco L, Ventura M, Zink R, Huys G, Swings J. Polyphasic taxonomic analysis of Bifidobacterium animalis and Bifidobacterium lactis reveals relatedness at the subspecies level: reclassification of Bifidobacterium animalis as Bifidobacterium animalis subsp. animalis subsp. nov. and Bifidobacterium lactis as Bifidobacterium animalis subsp. lactis subsp. nov. Int J Syst Evol Microbiol 2004; 54:1137-1143. 🇧🇪

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

• Notes:
  • 🙋 This subspecies could be automatically created (rule 40d) by the valid publication of Bifidobacterium animalis subsp. lactis (Meile et al. 1997) Masco et al. 2004 but an explicit description was also provided. Publication: Masco L, Ventura M, Zink R, Huys G, Swings J. Polyphasic taxonomic analysis of Bifidobacterium animalis and Bifidobacterium lactis reveals relatedness at the subspecies level: reclassification of Bifidobacterium animalis as Bifidobacterium animalis subsp. animalis subsp. nov. and Bifidobacterium lactis as Bifidobacterium animalis subsp. lactis subsp. nov. Int J Syst Evol Microbiol 2004; 54:1137-1143. 🇧🇪
  • 😷 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 2026-08-13. 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.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this subspecies. The name is on LoRN because of the recorded risk group of the genus.
  • 🧍 The original authorship, (Mitsuoka 1969) Scardovi and Trovatelli 1974, was corrected according to the new Rule 40d. Publication: Oren A, Arahal DR, Christensen H, Goker M, Manaia CM, Moore ERB. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2025 Revision). Int J Syst Evol Microbiol 2026; 76:6979. 🇮🇱

Parent taxon: Bifidobacterium animalis (Mitsuoka 1969) Scardovi and Trovatelli 1974 (Approved Lists 1980)

Assigned by: Masco L, Ventura M, Zink R, Huys G, Swings J. Polyphasic taxonomic analysis of Bifidobacterium animalis and Bifidobacterium lactis reveals relatedness at the subspecies level: reclassification of Bifidobacterium animalis as Bifidobacterium animalis subsp. animalis subsp. nov. and Bifidobacterium lactis as Bifidobacterium animalis subsp. lactis subsp. nov. Int J Syst Evol Microbiol 2004; 54:1137-1143. 🇧🇪

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Record number: 774023