Staph vs Strep, Lancefield Flashcards
(12 cards)
Compare the Shape, Gram reaction, and arrangement of Staphylococcus and Streptococcus.
Compare where they are found, catalase reaction, reaction to cold/dry, and salt tolerance of Staphylococcus and Streptococcus.
Compare the prevalance and pathogenicity, and normal flora of Staphylococcus epidermis and Streptococcus aureus.
Compare the fermentation of mannitol and coagulase reaction of Staphylococcus and Streptococcus.
What does beta hemolysis do? What are some example bacteria?
- Complete lysis of RBC
Group A + B Strep
What does alpha hemolysis do? What are example bacteria?
- Partial Destruction of RBC
Streptococcus pneumoniae
What does gamma hemolysis do? What are example bacteria
- No damage to RBC
S. mutans and Group D Strep
What category of bacteria is Streptococcus pyogenes? What does it cause?(5)
- GAS
- Pathogenic with 5% carriers
- Causes strep throat and scarlet fever
- heart valve and kidney damage
- Can cause flesh eating
- Basotracin sensitive
What category is Streptococcus agalactiae? What does it cause?(4)
- GBS
- Normal flora 25% women carriers
- Causes neonatal pneumonia, sepsis, meningitis
- pregnant women screened
- Pathogenic for immuno compromised and 50% of babies survive
What category is Enterococcus faecalis? What does it cause?(3)
- Carried by all humans
- Infections may result outside of GI
- Vancomyosin resistant E. has become major nosocomial pathogen
What category is Streptococcus mutans? What does it cause? (4)
- Non-Lancefield
- Carried by all humans
- Created biofilm on teeth using large sugars
- Causes cavities but fluoride is oxidizing agent
What category is Streptococcus pneumoniae? What does it cause? (4)
- Non-Lancefield
- Causes pneumonia
- Carried by 50% of humans
- Pneumovax is availible
