Β-hemolytic streptococci: Difference between revisions

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Β-hemolytic streptococci
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==Background==
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* Grouping of [[Stain::Gram-positive]] [[Cellular shape::coccus|cocci]]
  
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* Subgroups mostly defined by Lancefield grouping
  
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** Group A: [[Streptococcus pyogenes]]
  
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** Group B: [[Streptococcus agalactiae]]
  
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** Group G: [[Streptococcus dysgalactiae]]
  
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** Non-Lancefield: [[Streptococcus iniae]]
  
   
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===Microbiology===
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  +
*Grouping of [[Stain::Gram-positive]] [[Shape::coccus|cocci]]
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*Species of clinical interest mostly defined by Lancefield grouping
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**Group A: [[Streptococcus pyogenes]]
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**Group B: [[Streptococcus agalactiae]]
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**Non-Lancefield: [[Streptococcus iniae]]
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**Miscellaneous: [[Streptococcus anginosus group]] are sometimes β-hemolytic
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===Identification===
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{| class="wikitable"
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!Lancefield
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!Bac
  +
!PYR
  +
!Cam
  +
!VP
  +
!Hip
  +
!Arg
  +
!Esc
  +
!Str
  +
!Sbl
  +
!Tre
  +
!Rib
  +
!Species
  +
|-
  +
|A
  +
| +
  +
| +
  +
|–
  +
|–
  +
|–
  +
| +
  +
|v
  +
|–
  +
|–
  +
|
  +
|–
  +
|[[Streptococcus pyogenes]]
  +
|-
  +
|B
  +
|–
  +
|–
  +
| +
  +
|–
  +
| +
  +
| +
  +
|–
  +
|–
  +
|–
  +
|
  +
|
  +
|[[Streptococcus agalactiae]]
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|-
  +
|C
  +
|–
  +
|–
  +
|–
  +
|–
  +
|–
  +
| +
  +
|v
  +
|–
  +
|v
  +
| +
  +
| +
  +
|[[Streptococcus dysgalactiae]] subsp. ''dysgalactiae''
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|-
  +
|A,C,G,L
  +
|–
  +
|–
  +
|–
  +
|–
  +
|–
  +
| +
  +
| +
  +
|–
  +
|–
  +
| +
  +
| +
  +
|[[Streptococcus dysgalactiae]] subsp. ''equisimilis''
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|-
  +
|C
  +
|–
  +
|–
  +
|–
  +
|–
  +
|–
  +
| +
  +
|v
  +
| +
  +
|–
  +
|–
  +
|
  +
|[[Streptococcus equi]] subsp. ''equi''
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|-
  +
|C
  +
|–
  +
|–
  +
|–
  +
|–
  +
|–
  +
| +
  +
|v
  +
| +
  +
| +
  +
|
  +
|
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|[[Streptococcus equi]] subsp. ''zooepidemicus''
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|-
  +
|G
  +
|–
  +
|–
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|<nowiki>+</nowiki>
  +
|–
  +
|–
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|<nowiki>+</nowiki>
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|<nowiki>+</nowiki>
  +
|–
  +
|–
  +
|v
  +
|
  +
|[[Streptococcus canis]]
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|-
  +
|A, C, G, F, none
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|–
  +
|–
  +
|–
  +
| +
  +
|–
  +
| +
  +
| +
  +
|–
  +
|–
  +
| +
  +
|
  +
|[[Streptococcus anginosus group]]
  +
|-
  +
|C
  +
|–
  +
|–
  +
|–
  +
| +
  +
|–
  +
| +
  +
| +
  +
|–
  +
|–
  +
| +
  +
|
  +
|[[Streptococcus constellatus]] subsp. ''pharyngitis''
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|-
  +
|E, P, U, V, none
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|–
  +
| +
  +
| +
  +
| +
  +
|v
  +
| +
  +
| +
  +
|–
  +
| +
  +
| +
  +
|
  +
|[[Streptococcus porcinus]]
  +
|-
  +
|none
  +
|–
  +
| +
  +
| +
  +
|–
  +
|–
  +
|–
  +
| +
  +
| +
  +
|–
  +
|
  +
|
  +
|[[Streptococcus iniae]]
  +
|-
  +
|C, F
  +
| +
  +
|–
  +
|–
  +
|–
  +
|–
  +
|–
  +
|–
  +
|–
  +
|–
  +
|
  +
|
  +
|[[Streptococcus phocae]]
  +
|-
  +
|none
  +
|–
  +
|–
  +
|–
  +
|–
  +
|–
  +
| +
  +
|–
  +
|–
  +
|–
  +
| +
  +
|
  +
|[[Streptococcus didelphis]]
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|}
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== Further Reading ==
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  +
* What Happened to the Streptococci: Overview of Taxonomic and Nomenclature Changes. ''Clin Microbiol Rev''. 2002;15(4):613-630. doi: [[doi:10.1128/CMR.15.4.613-630.2002|10.1128/CMR.15.4.613-630.2002]]
 
{{DISPLAYTITLE:β-hemolytic streptococci}}
  
{{DISPLAYTITLE:β-hemolytic streptococci}}
 
[[Category:Gram-positive cocci]]
  
[[Category:Gram-positive cocci]]

Latest revision as of 23:05, 12 October 2020

Background

Microbiology

Identification

Lancefield Bac PYR Cam VP Hip Arg Esc Str Sbl Tre Rib Species
A + + – – – + v – – – Streptococcus pyogenes
B – – + – + + – – – Streptococcus agalactiae
C – – – – – + v – v + + Streptococcus dysgalactiae subsp. dysgalactiae
A,C,G,L – – – – – + + – – + + Streptococcus dysgalactiae subsp. equisimilis
C – – – – – + v + – – Streptococcus equi subsp. equi
C – – – – – + v + + Streptococcus equi subsp. zooepidemicus
G – – + – – + + – – v Streptococcus canis
A, C, G, F, none – – – + – + + – – + Streptococcus anginosus group
C – – – + – + + – – + Streptococcus constellatus subsp. pharyngitis
E, P, U, V, none – + + + v + + – + + Streptococcus porcinus
none – + + – – – + + – Streptococcus iniae
C, F + – – – – – – – – Streptococcus phocae
none – – – – – + – – – + Streptococcus didelphis

Further Reading

  • What Happened to the Streptococci: Overview of Taxonomic and Nomenclature Changes. Clin Microbiol Rev. 2002;15(4):613-630. doi: 10.1128/CMR.15.4.613-630.2002
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