[Intestinal cryptosporidiosis: a case of hospital infection].

A hospital acquired case of human cryptosporidiosis is reported in a pediatric patient with prolonged diarrhea, whose previous investigation was negative for the agent. Cryptosporidium was isolated from feces in coincidence with admission, to the same hospital room, of an additional patient with acute diarrhea in whom infection by the same agent had been demonstrated. Infant to infant transmission in hospital wards is thus a possibility.