Streptococcus: Difference between revisions

Revision as of 20:57, 4 August 2020

Microbiology

Catalase-negative Gram-positive 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)

Species

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 ==
+==Microbiology==
-* Catalase-negative Gram positive cocci in pairs or chains
+*[[Catalase test::Catalase-negative]] [[Stain::Gram-positive]] [[Cellular shape::coccus]] in pairs or chains
-* Two orthogonal classifications
+*Two orthogonal classifications
-** Hemolytic properties
+**Hemolytic properties
-*** Alpha: incomplete hemolysis (appears green)
+***Alpha: incomplete hemolysis (appears green)
-*** Beta: complete hemolysis (appears clear)
+***Beta: complete hemolysis (appears clear)
-*** Gamma: no hemolysis
+***Gamma: no hemolysis
-** Lancefield antigen group (A-H)
+**Lancefield antigen group (A-H)
-== Species ==
+==Species==
-* Alpha-hemolytic
+*Alpha-hemolytic
-** ''[[Streptococcus pneumoniae|S. pneumoniae]]'' (usually in pairs)
+**''[[Streptococcus pneumoniae|S. pneumoniae]]'' (usually in pairs)
-** [[Viridans group streptococci]]
+**[[Viridans group streptococci]]
-*** ''S. mitis''
+***''S. mitis''
-*** ''S. oralis''
+***''S. oralis''
-*** ''S. mutans''
+***''S. mutans''
-*** ''S. sanguinis''
+***''S. sanguinis''
-*** ''S. sobrinus''
+***''S. sobrinus''
-*** Milleri group
+***Milleri group
-**** ''S. anginosus''
+****''S. anginosus''
-**** ''S. constellatus''
+****''S. constellatus''
-**** ''S. intermedius''
+****''S. intermedius''
-* Beta-hemolytic
+*Beta-hemolytic
-** Group A: ''[[Streptococcus pyogenes|S. pyogenes]]''
+**Group A: ''[[Streptococcus pyogenes|S. pyogenes]]''
-** Group B: ''S. agalactiae''
+**Group B: ''S. agalactiae''
-** Group G: ''S. dysgalactiae''
+**Group G: ''S. dysgalactiae''
-** Non-Lancefield: ''S. iniae''
+**Non-Lancefield: ''S. iniae''
-* Gamma-hemolytic
+*Gamma-hemolytic
-** Group D streptococci
+**Group D streptococci
-*** ''[[Streptococcus bovis|S. bovis]]''
+***''[[Streptococcus bovis|S. bovis]]''
-*** Previously, ''[[Enterococcus]]'' spp.
+***Previously, ''[[Enterococcus]]'' spp.
 {{DISPLAYTITLE:''Streptococcus'' species}}