Name: Streptococcus infantarius subsp. coli Schlegel et al. 2003

Category: Subspecies

Proposed as: subsp. nov.

Etymology: co’li. L. masc. adj. infantarius, relating to infants, the source of the type strain; L. neut. n. colon, colon; L. gen. neut. n. coli, of colon

Gender: masculine

Type strain: CCUG 43822; CCUG 47831; CCUG 48464; DSM 22957; HDP 90246; NCDO 964; NCIMB 700964

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF429763 Analyse FASTA

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

Risk group: 2

• Emendations:
  • Beck et al. 2008 Beck M, Frodl R, Funke G. Comprehensive study of strains previously designated Streptococcus bovis consecutively isolated from human blood cultures and emended description of Streptococcus gallolyticus and Streptococcus infantarius subsp. coli. J Clin Microbiol 2008; 46:2966-2972. Euzeby JP. List of changes in taxonomic opinion no. 9. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2009; 59:5-6.
    Notes:
    • 🧍 In the paper by Beck et al. 2008, Streptococcus infantarius subsp. coli Schlegel et al. 2003 is erroneously cited as Streptococcus infantarius subsp. coli Schlegel et al. 2000.

• Notes:
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2.
  • 🧍 In the July 2000 issue of the IJSEM, Schlegel et al. [1] proposed the subspecies "Streptococcus infantarius subsp. coli". It would appear that this name not validly published because no type strain was designated [see Rule 27]. The authors mistakenly designated a reference strain (strain HDP 90248 = NCDO 2620 in the summary, or strain HDP 90246 = NCDO 964 on page 1433) rather than use the term "type strain". Despite this fact, "Streptococcus infantarius subsp. coli" Schlegel et al. 2000 was cited in the Notification List published in the September 2000 issue of the IJSEM [2]. In 2002, Poyart et al. [3] proposed to place the strain HDP 90246 = CCUG 47831 = NCIMB 700964 (formerly NCDO 964) in the new species Streptococcus lutetiensis. The type strain of this species and the reference strain of "Streptococcus infantarius subsp. coli" are known to belong to the same taxon [3]. In the May 2003 issue of the IJSEM, Schlegel et al. [4] describe the subspecies Streptococcus infantarius subsp. coli, and formally designate a type strain. However, they do not cite the fact that Streptococcus infantarius subsp. coli Schlegel et al. 2003 and Streptococcus lutetiensis Poyart et al. 2002 should be placed in the same taxon. If Streptococcus lutetiensis Poyart et al. 2002, which is validly published, is considered to have priority over Streptococcus infantarius subsp. coli Schlegel et al. 2003 then placing the members of this taxon in a subspecies of Streptococcus infantarius would result in the creation of the combination "Streptococcus infantarius subsp. lutetiensis" and the name Streptococcus infantarius subsp. coli Schlegel et al. 2003 is not in accordance with the rules of the ICNP. It is clear from the work of Schlegel et al. 2003 [4] that the authors intended to create a new subspecies Streptococcus infantarius subsp. coli in the original work (Schlegel et al. 2000 [1]). The incorrect use of the term "reference strain" was discussed at a recent meeting of the Judicial Commission in Paris, but the solution sought by Schlegel et al., 2003 has created further problems since the consequences of the work of Poyart et al. 2002 [3] have not been taken into consideration. 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 paper by Schlegel et al. 2003, the type strain CCUG 47831 is erroneously cited as CCUG 43822. — Falsen E. Personal communication, 2003-06-30.

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: 784983