Organism | Community acquired endocarditis (IV drug users) | Hospital acquired endocarditis (intravascular devices) |
Staphylococcus aureus α-hemolytic streptococci (viridans) Enterococcus Culture negative Fungi Staphylococcus epidermidis (coagulase negative) Others (Escherichia coli, Klebsiella, Corynebacterium) | 30% - 50% (MRSA-minority) 10% - 35% 5% - 10% 5% - 30% <5% <5% <5% | 60% - 80% (MRSA-majority) <5% 5% 5% 10% <5% 5% - 10% |