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Gram positive (Stain purple (Rods (Corynebacterium, Listeria, Clostridium,…
Gram positive
Stain purple
Rods
Corynebacterium
Listeria
Clostridium
Bacillus
Cocci
Catalase positive (Clusters)
Staphylococcus
Coagulase +
Staphylococcus aureus
Very virulent !, Multiple abscesses Pneumonia (ventilation), Impetigo, Ostemyelitis, artritis, ACUTE ENDOCARDITIS !
Coagulase -
Novobiocin susceptible
S. epidermidis
Endocarditis
Novobiocin resistant
S. saprophyticus
Honeymoon cistitis
Catalase negative (Chains)
Streptococcus
Beta
Total hemolysis (Clear)
Group A, Bacitracin sensible
S. pyogenes
Streptolysin O, pharingitis, GMN, erisipela, necrotizing fascitis
Group B, bacitracin resistant
S. agalactiae
No. 1 CAUSE of neonatal meningitis
Gama
(No hemolysis)
Enterococcus, peptostreptococcus
Alpha
Partial hemolysis (Greenish)
Optochin sesnsible, capsule +, Quellun +
Streptococcus pneumoniae
No. 1 CAUSE of Community aquired pneumonia
Optochin resistant, no capsule
Streptococcus viridans
SUBACUTE ENDOCARDITIS (3-4 weeks) in cardiac valve protesis.