Name: Streptococcus infantarius subsp. infantarius (Schlegel et al. 2000) Schlegel et al. 2003

Category: Subspecies

Proposed as: subsp. nov.

Basonym: Streptococcus infantarius Schlegel et al. 2000

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

Gender: 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

Valid 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.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 53, part 3 of the IJSEM. Int J Syst Evol Microbiol 2003; 53:1221-1222.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Notes:
  • 🙋 This subspecies could be automatically created (rule 40d) by the valid publication of Streptococcus infantarius subsp. coli Schlegel et al. 2003 but an explicit description was also provided. 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.
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 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.
  • 🙆 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 species itself.
  • 🧍 Despite this fact, "Streptococcus infantarius subsp. infantarius" was cited in the Notification List published in the September 2000 issue of the IJSEM [2]. Publication: 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.
  • 🧍 In the July 2000 issue of the IJSEM, Schlegel et al. [1] proposed the subspecies "Streptococcus infantarius subsp. infantarius" and "Streptococcus infantarius subsp. coli". "Streptococcus infantarius subsp. coli" Schlegel et al. 2000 may be considered to be not validly published (see Streptococcus infantarius subsp. coli). Consequently, it would not be usual to cite this subspecies combination if a validly published species contains only one validly published subspecies combination (i.e. Streptococcus infantarius subsp. infantarius Schlegel et al. 2000). 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.
  • 🧍 In the May 2003 issue of the IJSEM, Schlegel et al. [3] describe again the subspecies Streptococcus infantarius subsp. coli and Streptococcus infantarius subsp. infantarius. The name Streptococcus infantarius subsp. coli Schlegel et al. 2003 may also not be in accordance with the rules of the ICNP, which would also call into question the use of the subspecies name Streptococcus infantarius subsp. infantarius Schlegel et al. 2003 at the present. 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.

Parent taxon: Streptococcus infantarius Schlegel et al. 2000

Assigned by: 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.

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Record number: 784984