Streptococcus: Difference between revisions

Latest revision as of 16:42, 12 March 2022

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)

Species

Streptococcus pneumoniae (alpha-hemolytic, usually in pairs)
Viridans group streptococci
Pyogenic group
- Streptococcus pyogenes (beta-hemolytic, group A)
- Streptococcus canis
- Streptococcus urinalis
- Streptococcus dysgalactiae (beta-hemolytic, group G)
  - Streptococcus dysgalactiae subspecies dysgalactiae
  - Streptococcus dysgalactiae subspecies equisimilis
- Streptococcus agalactiae (beta-hemolytic, group B)
- Streptococcus porcinus
- Streptococcus parauberis
- Streptococcus uberis
- Streptococcus iniae
Streptococcus bovis group (gamma-hemolytic, Group D)
Other streptococci

@@ Line 11: / Line 11: @@
 ==Species==
+*[[Streptococcus pneumoniae]] (alpha-hemolytic, usually in pairs)
-*Alpha-hemolytic
+*[[Viridans group streptococci]]
-**[[Streptococcus pneumoniae|Streptococcus pneumoniae]] (usually in pairs)
-**[[Viridans group streptococci]]
+**[[Streptococcus mitis group]]
 ***[[Streptococcus mitis]]
 ***[[Streptococcus oralis]]
-***[[Streptococcus mutans]]
+***[[Streptococcus peroris]]
+***[[Streptococcus infantis]]
+***[[Streptococcus parasanguinis]]
+***[[Streptococcus cristatus]]
+***[[Streptococcus gordonii]]
 ***[[Streptococcus sanguinis]]
+**[[Streptococcus salivarius group]]
+***[[Streptococcus salivarius]]
+***[[Streptococcus vestibularis]]
+***[[Streptococcus thermophilus]]
+**[[Streptococcus mutans group]]
+***[[Streptococcus mutans]]
 ***[[Streptococcus sobrinus]]
-***[[Streptococcus anginosus group]]
+***[[Streptococcus ratti]]
-****[[Streptococcus anginosus]]
+***[[Streptococcus downei]]
-****[[Streptococcus constellatus]]
+**[[Streptococcus anginosus group]]
-****[[Streptococcus intermedius]]
+***[[Streptococcus anginosus]]
+***[[Streptococcus constellatus]]
-*Beta-hemolytic
-**Group A: [[Streptococcus pyogenes|Streptococcus pyogenes]]
+***[[Streptococcus intermedius]]
+*Pyogenic group
-**Group B: [[Streptococcus agalactiae]]
-**Group G: [[Streptococcus dysgalactiae]]
+**[[Streptococcus pyogenes]] (beta-hemolytic, group A)
+**[[Streptococcus canis]]
-**Non-Lancefield: [[Streptococccus iniae]]
+**[[Streptococcus urinalis]]
-*Gamma-hemolytic
+**[[Streptococcus dysgalactiae]] (beta-hemolytic, group G)
-**Group D streptococci
-***[[Streptococcus bovis|Streptococcus bovis]]
+***[[Streptococcus dysgalactiae subspecies dysgalactiae]]
+***[[Streptococcus dysgalactiae subspecies equisimilis]]
-***Previously, [[Enterococcus]] spp.
+**[[Streptococcus agalactiae]] (beta-hemolytic, group B)
+**[[Streptococcus porcinus]]
+**[[Streptococcus parauberis]]
+**[[Streptococcus uberis]]
+**[[Streptococcus iniae]]
+*[[Streptococcus bovis group]] (gamma-hemolytic, Group D)
+**[[Streptococcus bovis]]
+**[[Streptococcus infantarius]]
+**[[Streptococcus lutentiensis]]
+**[[Streptococcus equinus]]
+**[[Streptococcus alactolyticus]]
+**[[Streptococcus macedonicus]]
+**[[Streptococcus waius]]
+**[[Streptococcus pasteurianus]]
+*Other streptococci
+**[[Streptococcus acidominimus]]
+***[[Streptococcus suis]]
+***[[Streptococcus ovis]]
+***[[Streptococcus equi]]
+**[[Nutritionally variant streptococci]]
+***[[Granulicatella adiacens]]
+***[[Granulicatella paraadiacens]]
+***[[Granulicatella elegans]]
+***[[Abiotrophia defectiva]]
+**Previously, [[Enterococcus]] spp.
 {{DISPLAYTITLE:''Streptococcus''}}