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%