Streptococcus species
From IDWiki
Microbiology
- Catalase negative Gram-positive coccus in pairs or chains
- Two orthogonal classifications
- Hemolytic properties on blood agar
- Alpha: incomplete hemolysis (appears green)
- Beta: complete hemolysis (appears clear)
- Gamma: no hemolysis
- Lancefield antigen group (A-H)
- Hemolytic properties on blood agar
Species
- Alpha-hemolytic
- Beta-hemolytic
- Group A: Streptococcus pyogenes
- Group B: Streptococcus agalactiae
- Group G: Streptococcus dysgalactiae
- Non-Lancefield: Streptococccus iniae
- Gamma-hemolytic
- Group D streptococci
- Streptococcus bovis
- Previously, Enterococcus spp.
- Group D streptococci