Table 1

 Cases of infective endocarditis (IE) diagnosed from 1990 to 2003 at both study institutions

OverallCases caused by S lugdunensis
Injection drug users2590 (0%)
General population65310 (1.5%)
    Native valve IE4674 (0.8%)
    Prosthetic valve IE1352 (1.5%)
    Pacemaker lead IE514 (7.8%)
Total91210 (1.1%)