Replacement of the mitral valve in an infant with group B streptococcal endocarditis

Endocarditis due to group B streptococcus is very rare in infants, and may be associated with significant morbidity and mortality.(1-4) Review of the literature reveals only a single reported case of an infant with this type of streptococcal endocarditis involving the mitral valve.(4) This infant ha d underlying congenital heart disease, and died shortly after catheterizati on. We now report group B streptococcal endocarditis occurring in an infant with a structurally normal heart: who was treated successfully by replacem ent of the mitral valve.