Name: Streptococcus dysgalactiae subsp. dysgalactiae (Garvie et al. 1983 ex Diernhofer 1932) Vandamme et al. 1996

Category: Subspecies

Proposed as: subsp. nov. (rule 40d)

Basonym: Streptococcus dysgalactiae (ex Diernhofer 1932) Garvie et al. 1983

Etymology: dys.ga.lac.ti’ae. Gr. pref. dys-, bad, hard (inseparable prefix); Gr. neut. n. gala (gen. galaktos), milk; N.L. fem. n. dysgalactia, loss or impairment of milk secretion; N.L. gen. fem. n. dysgalactiae, of dysgalactia

Pronunciation (Latin), gender: strep-to-KOK-kus dys-ga-lak-TI-a͡e dys-ga-lak-TI-a͡e, masculine

Type strain: ATCC 43078; CCUG 27301; CIP 102914; DSM 20662; LMG 15885; LMG 16023; NCDO 2023; NCFB 2023; NCIMB 702023; NCTC 13759

See detailed strain information at

Valid publication: Vandamme P, Pot B, Falsen E, Kersters K, Devriese LA. Taxonomic study of lancefield streptococcal groups C, G, and L (Streptococcus dysgalactiae) and proposal of S. dysgalactiae subsp. equisimilis subsp. nov. Int J Syst Bacteriol 1996; 46:774-781. 🇧🇪

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 46, part 3 of the IJSB. Int J Syst Bacteriol 1996; 46:1191.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Emendations:
  • Vieira et al. 1998 Vieira VV, Teixeira LM, Zahner V, Momen H, Facklam RR, Steigerwalt AG, Brenner DJ, Castro AC. Genetic relationships among the different phenotypes of Streptococcus dysgalactiae strains. Int J Syst Bacteriol 1998; 48:1231-1243. 🇧🇷 Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 48, part 4 of the IJSB. Int J Syst Bacteriol 1999; 49:5-6.

• Notes:
  • 📠 This subspecies was automatically created by the valid publication of Streptococcus dysgalactiae subsp. equisimilis Vandamme et al. 1996 according to rule 40d. Publication: Vandamme P, Pot B, Falsen E, Kersters K, Devriese LA. Taxonomic study of lancefield streptococcal groups C, G, and L (Streptococcus dysgalactiae) and proposal of S. dysgalactiae subsp. equisimilis subsp. nov. Int J Syst Bacteriol 1996; 46:774-781. 🇧🇪
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 1, note = "animal pathogen - biological class of risk animal: 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2, note = "PV". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "ht". — 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.
  • 🧍 Jelínková and Köhler suggested that Streptococcus dysgalactiae subsp. dysgalactiae and Streptococcus dysgalactiae subsp. equisimilis should be regarded as separate species on clinical and epidemiological grounds. Current taxonomic evidence did not appear to support this view, although these streptococci are generally regarded as distinct species by clinical microbiologists. — 🧍 The original authorship, (ex Diernhofer 1932) Garvie et al. 1983, was corrected according to the new Rule 40d. Publication: Kloos WE, Hardie JM, Whiley RA. International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of staphylococci and streptococci. Minutes of the meetings, 17 September 1996, Institut Pasteur, Paris, France. Int. J. Syst. Evol. Microbiol. 2001; 51:717-718. 🇺🇸

Parent taxon: Streptococcus dysgalactiae (ex Diernhofer 1932) Garvie et al. 1983

Assigned by: Vandamme P, Pot B, Falsen E, Kersters K, Devriese LA. Taxonomic study of lancefield streptococcal groups C, G, and L (Streptococcus dysgalactiae) and proposal of S. dysgalactiae subsp. equisimilis subsp. nov. Int J Syst Bacteriol 1996; 46:774-781. 🇧🇪

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Record number: 781321