Clostridium paraputrificum Bacteremia in an Older Patient with No Predisposing Medical Condition.

We herein report a rare case of Clostridium paraputrificum bacteremia in an elderly (88-year-old) man without a predisposing medical condition. Although he had a history of anaerobic bacteremia approximately eight months prior to admission, no gastrointestinal disease was discovered. He was treated with intravenous ampicillin/sulbactam. This case suggests that C. paraputrificum bacteremia can result from only minor abnormalities in macroscopically normal mucosal barriers. To our knowledge, this is the first report of C. paraputrificum bacteremia in Japan.