First report of human infection due to Streptococcus devriesei

Abstract So far, Streptococcus devriesei , which belongs to the mutans streptococci group, has been incriminated in the formation of caries in Equidae . We report the first human infection due to this species in a 54-year-old man with gangrenous cholecystitis. The patient was treated successfully by cholecystectomy and ceftriaxone.