Microbiology Flashcards
Name 2 types of gram positive cocci
-Chains (strep)
-Clusters (staph)
How can we classify strep (3)
-a haemolytic ()
-b haemolytic ()
-non haemolytic ()
Name 2 common a-haemolytic organisms +examples
-Strep pneumoniae (pneumonia)
-Strep “viridans” (commensals) (endocarditis)
Name 3 common groups of b-haemolytic organisms
-Group A Strep
-Group B Step
-Group C, G, etc….
Group A Strep infects…
Throat + Skin infection
Example of Group B Strep
Neonatal meningitis
Name common non-haemolytic organism
Enterococcus sp.
Example of enterococcus sp. organism/infections
-Gut commensal
-UTI
How can we classify staph
-Coagulase positive
-Coagulase negative
Name a common coagulase positive organism
Staph. Aureus
Staph. Aureus infects…
Wounds + Skin infections
Name a coagulase negative organism
Staph. Epidermis
What occurs in alpha haemolysis?What colour is seen?
Partial lysis of red blood cells –> green discolouration
What occurs in beta haemolysis?What colour is seen?
Complete lysis of red blood cells –> colourless
What occurs in gamma (non) haemolysis?What colour is seen?
No lysis of red blood cells –> no change
