Streptococcus anginosus

Streptococcus anginosus
Cultures of Streptococcus anginosus on blood agar
Scientific classification
Domain: Bacteria
Kingdom: Bacillati
Phylum: Bacillota
Class: Bacilli
Order: Lactobacillales
Family: Streptococcaceae
Genus: Streptococcus
Species:
S. anginosus
Binomial name
Streptococcus anginosus
(Andrewes and Horder 1906) Smith and Sherman 1938 (Approved Lists 1980)

Streptococcus anginosus is a species of Streptococcus. This species, Streptococcus intermedius, and Streptococcus constellatus constitute the anginosus group, which is sometimes also referred to as the milleri group after the previously assumed but later refuted idea of a single species Streptococcus milleri. Phylogenetic relatedness of S. anginosus, S. constellatus, and S. intermedius has been confirmed by rRNA sequence analysis.