Streptococcus: Difference between revisions

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Streptococcus
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==Species==
 
==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 mitis]]
 
***[[Streptococcus oralis]]
 
***[[Streptococcus oralis]]
***[[Streptococcus mutans]]
+
***[[Streptococcus peroris]]
 
***[[Streptococcus infantis]]
  +
***[[Streptococcus parasanguinis]]
  +
***[[Streptococcus cristatus]]
  +
***[[Streptococcus gordonii]]
 
***[[Streptococcus sanguinis]]
 
***[[Streptococcus sanguinis]]
  +
**[[Streptococcus salivarius group]]
  +
***[[Streptococcus salivarius]]
  +
***[[Streptococcus vestibularis]]
  +
***[[Streptococcus thermophilus]]
  +
**[[Streptococcus mutans group]]
  +
***[[Streptococcus mutans]]
 
***[[Streptococcus sobrinus]]
 
***[[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'' species}}
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{{DISPLAYTITLE:''Streptococcus''}}
 
[[Category:Gram-positive cocci]]
 
[[Category:Gram-positive cocci]]

Latest revision as of 12:42, 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