Gram-positive cocci
Staphylococcus aureus
Direct stain of
Staphylococcus epidermidis
Staphylococcus
sp. (Coagulase-negative)
Streptococcus pneumoniae
Group A,
Streptococcus pyogenes
Enterococcus
sp.
Streptococcus agalactiae
(group B)