Streptococcus dysgalactiae subsp. equisimilis

Streptococcus dysgalactiae subsp. equisimilis is a species of Streptococcus, initially described by Frost in 1936.^[1] As a result of several DNA hybridization studies in 1983, the species was merged into Streptococcus dysgalactiae.^[2] Subsequently, S. dysgalactiae was divided into the subspecies Streptococcus dysgalactiae subsp. equisimilis and Streptococcus dysgalactiae subsp. dysgalactiae.^[3] Although the name Streptococcus equisimilis is no longer valid, it is still encountered both in clinical practice, and in scientific journals.^[4]

Streptococcus dysgalactiae subsp. equisimilis
Scientific classification
Domain:	Bacteria
Kingdom:	Bacillati
Phylum:	Bacillota
Class:	Bacilli
Order:	Lactobacillales
Family:	Streptococcaceae
Genus:	Streptococcus
Species:	S. dysgalactiae
Subspecies:	S. d. subsp. equisimilis
Trinomial name
Streptococcus dysgalactiae subsp. equisimilis Vandamme et al. 1996