Species ***Streptococcus* *infantarius***

Classification:

Bacteria Bacillati Bacillota Bacilli Lactobacillales Streptococcaceae Streptococcus Streptococcus infantarius

Name: Streptococcus infantarius Schlegel et al. 2000

Category, proposed as: species, sp. nov.

Etymology: in.fan.ta’ri.us. L. masc. adj. infantarius, that has to do with infants, the source of the type strain

Pronunciation (Latin), gender: strep-to-KOK-kus in-fan-TA-ri-us, masculine

Type strain: ATCC BAA-102; CCUG 43820; CIP 103233; DSM 22960; HDP 90056; NCDO 599; NCFB 599; NCIMB 700599

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF429762 Analyse FASTA

Valid publication: Schlegel L, Grimont F, Collins MD, Regnault B, Grimont PA, Bouvet A. Streptococcus infantarius sp. nov., Streptococcus infantarius subsp. infantarius subsp. nov. and Streptococcus infantarius subsp. coli subsp. nov., isolated from humans and food. Int J Syst Evol Microbiol 2000; 50:1425-1434. 🇫🇷

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 50, part 4 of the IJSEM. Int J Syst Evol Microbiol 2000; 50:1701-1702.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

Synonyms:

Name	Kind
"Streptococcus infantarius" Bouvet et al. 1997	homotypic synonym, not validly published

Notes:
- 🧬 The phylogenomic assignment score of this taxon is 0.10780 (N = 3).
- 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — 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 75 times in PubMed until 2026-06-11.
- 🙆 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 species itself.
- 🧍 According to Bartlett et al. (2022), this species is an established 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. 🇬🇧
- 🧍 Because Streptococcus infantarius subsp. coli is not a valid name (lack of type strain) Streptococcus infantarius subsp. infantarius may be reduced to S. infantarius. — 🧍 Subsequently, this species has been divided into subspecies (see: below). — There are some problems with the two subspecies Streptococcus infantarius subsp. infantarius and Streptococcus infantarius subsp. coli (see: below). The author is very grateful to Dr. B.J. Tindall (DSMZ) for his helpful comments. Publication: Schlegel L, Grimont F, Ageron E, Grimont PA, Bouvet A. Reappraisal of the taxonomy of the Streptococcus bovis/Streptococcus equinus complex and related species: description of Streptococcus gallolyticus subsp. gallolyticus subsp. nov., S. gallolyticus subsp. macedonicus subsp. nov. and S. gallolyticus subsp. pasteurianus subsp. nov. Int J Syst Evol Microbiol 2003; 53:631-645. 🇫🇷

Subdivision:

Number of child taxa with a validly published and correct name: 2
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

Child taxa:

Name	Nomenclatural status	Taxonomic status
Streptococcus infantarius subsp. coli Schlegel et al. 2003	validly published under the ICNP	correct name
Streptococcus infantarius subsp. infantarius (Schlegel et al. 2000) Schlegel et al. 2003	validly published under the ICNP	correct name

Parent taxon: Streptococcus Rosenbach 1884 (Approved Lists 1980)

Assigned by: Schlegel L, Grimont F, Collins MD, Regnault B, Grimont PA, Bouvet A. Streptococcus infantarius sp. nov., Streptococcus infantarius subsp. infantarius subsp. nov. and Streptococcus infantarius subsp. coli subsp. nov., isolated from humans and food. Int J Syst Evol Microbiol 2000; 50:1425-1434. 🇫🇷

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.784982Link copied to clipboard

Record number: 784982

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Species ***Streptococcus* *infantarius***