Balantidiasis is a zoonosis produced by Balantidium coli, which inhabits the large intestine of the pig and man. Infection is uncommon in humans and mainly affects the colon. It occurs more frequently in developing countries, tropical and subtropical regions. Colonic balantidiasis can occur in most
A fatal case of a 63-year-old pig-raising country woman with an eight-day course of nausea, vomiting, dysentery with intestinal bleeding the latter being the direct cause of death. The autopsy showed ulcerative colitis due to B. coli, which was easily observed on histological examination of the