Streptococcus anginosus

**Semantic type:** Bacterium

**Definition:** A species of facultatively anaerobic, Gram positive, cocci shaped bacteria in the phylum Firmicutes. This species is positive for arginine deamination, esculin hydrolysis and beta glucosidase and negative for urease, catalase, sialidase and hyaluronidase. It can ferment amygdalin, lactose, salicin, cellobiose, trehalose and raffinose but not arabinose, glycerol, inulin, sorbitol, mannitol or ribose. S. anginosis is found in normal human urogenital and gastrointestinal tracts and is involved in opportunistic infections of abscesses.

**Synonyms:** - STREPTOCOCCUS ANGINOSUS