Name: Streptococcus salivarius subsp. thermophilus (Orla-Jensen 1919) Farrow and Collins 1984

Category: Subspecies

Proposed as: comb. nov.

Basonym: Streptococcus thermophilus Orla-Jensen 1919 (Approved Lists 1980)

Etymology: ther.mo’phi.lus. Gr. fem. adj. thermê, hot; N.L. adj. philus -a -um, friend, loving; from Gr. adj. philos -ê -on, loving; N.L. masc. adj. thermophilus, heat-loving

Pronunciation, gender: t^her-MO-p^hi-lus, masculine

Type strain: ATCC 19258; CCUG 21957; CIP 102303; DSM 20617; LMG 6896; NBIMCC 3916; NCDO 573; NCFB 573; NCIB 8510; NCIMB 8510

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X68418 Analyse FASTA

Effective publication: Farrow JA, Collins MD. DNA base composition, DNA-DNA homology and long-chain fatty acid studies on streptococcus thermophilus and Streptococcus salivarius. J Gen Microbiol 1984; 130:357-362.

IJSEM list: Anonymous. Validation list no. 15. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1984; 34:355-357.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Streptococcus thermophilus Orla-Jensen 1919 (Approved Lists 1980)

Risk group: 1

• Synonyms:

  • Name	Kind
    Streptococcus thermophilus Orla-Jensen 1919 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • ❗ Streptococcus salivarius subsp. thermophilus is the correct name instead if this subspecies is regarded as a separate subspecies (i.e., if its nomenclatural type is not assigned to another subspecies whose name is validly published, legitimate and not rejected and has priority) within a separate species Streptococcus salivarius within a separate genus Streptococcus.
  • 😷 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. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 1, note = "P650 = v". — 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 a synonym of the name to be applied to this subspecies. The name is on LoRN because of the recorded risk group of the species itself.

Parent taxon: Streptococcus salivarius Andrewes and Horder 1906 (Approved Lists 1980)

Assigned by: Farrow JA, Collins MD. DNA base composition, DNA-DNA homology and long-chain fatty acid studies on streptococcus thermophilus and Streptococcus salivarius. J Gen Microbiol 1984; 130:357-362.

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Record number: 781384