A patient had endocarditis caused by Streptococcus bovis tsi ice 8 years ap
art. According to pulsed-field gel electrophoresis (PFGE) the two isolates
were identical. Seven unrelated blood isolates of S. bovis yielded unique P
FGE patterns. Considering this heterogeneous population structure our findi
ngs demonstrate the long-term persistence of an S. bovis clone in a patient
with recurrent endocarditis.