Streptococcus: Difference between revisions

Revision as of 15:58, 20 August 2020

Catalase-negative]] Gram [[Catalase::positive"Gram [[Catalase::positive" is not in the list (Gram-positive, Gram-negative, acid-fast, partially acid-fast, Gram-variable) of allowed values for the "Stain" property. coccus in pairs or chains
Two orthogonal classifications
- Hemolytic properties
  - Alpha: incomplete hemolysis (appears green)
  - Beta: complete hemolysis (appears clear)
  - Gamma: no hemolysis
- Lancefield antigen group (A-H)

Alpha-hemolytic
- S. pneumoniae (usually in pairs)
- Viridans group streptococci
  - S. mitis
  - S. oralis
  - S. mutans
  - S. sanguinis
  - S. sobrinus
  - Milleri group
    - S. anginosus
    - S. constellatus
    - S. intermedius
Beta-hemolytic
- Group A: S. pyogenes
- Group B: S. agalactiae
- Group G: S. dysgalactiae
- Non-Lancefield: S. iniae
Gamma-hemolytic
- Group D streptococci
  - S. bovis
  - Previously, Enterococcus spp.

@@ Line 1: / Line 1: @@
 ==Microbiology==
-*[[Catalase test::Catalase-negative]] [[Stain::Gram-positive]] [[Cellular shape::coccus]] in pairs or chains
+*Catalase-negative]] [[Stain::Gram [[Catalase::positive]] [[Cellular shape::coccus]] in pairs or chains
 *Two orthogonal classifications
 **Hemolytic properties