Proteus mirabilis: a rare cause of infectious endocarditis.

Native valve endocarditis resulting from Proteus mirabilis is an exceptionally rare entity. To date, 10 cases have been reported. We present a case of a 58-y-old female with fevers, bacteremia, and embolic phenomenon. Unlike previous cases, early antibiotic treatment precluded valvular repair or death, leading to a favorable outcome.