Streptococcus: Difference between revisions
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Streptococcus
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==Microbiology== |
==Microbiology== |
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*Catalase [[Catalase::negative]] [[Stain::Gram-positive]] [[ |
*Catalase [[Catalase::negative]] [[Stain::Gram-positive]] [[Shape::coccus]] in pairs or chains |
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*Two orthogonal classifications |
*Two orthogonal classifications |
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**Hemolytic properties on blood agar |
**Hemolytic properties on blood agar |
Revision as of 12:27, 31 August 2021
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