Streptococcus And Enterococcus Flashcards by chris trejo

Common features of streptococci and enterococci

Gram positive Cocci
arranged in pairs and chains
Catalase negative

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Vivridans streptococci

Alpha and beta hemolytic streptococci

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Viridans streptococci are resistant to…

Optochin
(Except streptococcus pneumoniae)

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Streptococcus pneumoniae

Is bile soluble

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S. Pyogenes

Lance field: group A
Hemolysis: beta
Catalase : (-)
Sensitivity: bacitracin
PYR: (+)

Strep throat (pharyngitis)

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S. agalactiae

Lance field: group B
Hemolysis: beta
Catalase : (-)
Sensitivity: Penicillin G
PYR: (-)

Bacteremia, pneumonia…..meningitis, UTI, post partum endometriosis, skin and soft tissue infections

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Streptococcus And Enterococcus Flashcards