A rare case of -induced persistent bacteremia with liver and splenic abscesses in an immunocompetent patient.

, a low-pathogenic bacterium used in the traditional Japanese food "natto" (fermented soybeans), has rarely been reported as a pathogen of infectious diseases in humans. Herein, we report the first case of persistent bacteremia caused by in an immunocompetent patient without any gastrointestinal involvement. A 53-year-old Japanese woman who had been consuming natto every day was admitted to our hospital with complaints of fever and chills.