Β-hemolytic streptococci: Difference between revisions
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Β-hemolytic streptococci
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== Background == |
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=== Microbiology === |
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*Grouping of [[Stain::Gram-positive]] [[Cellular shape::coccus|cocci]] |
*Grouping of [[Stain::Gram-positive]] [[Cellular shape::coccus|cocci]] |
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*Species of clinical interest mostly defined by Lancefield grouping |
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**Group A: [[Streptococcus pyogenes]] |
**Group A: [[Streptococcus pyogenes]] |
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**Group B: [[Streptococcus agalactiae]] |
**Group B: [[Streptococcus agalactiae]] |
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**Group F: |
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**Group G: [[Streptococcus dysgalactiae]] |
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**Non-Lancefield: [[Streptococcus iniae]] |
**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" |
{| class="wikitable" |
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!Lancefield |
!Lancefield |
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Revision as of 16:00, 22 August 2020
Background
Microbiology
- Grouping of Gram-positive cocci
- Species of clinical interest mostly defined by Lancefield grouping
- Group A: Streptococcus pyogenes
- Group B: Streptococcus agalactiae
- Non-Lancefield: Streptococcus iniae
- Miscellaneous: Streptococcus anginosus group are sometimes β-hemolytic
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 |
