Infection by parasites of the genus BALANTIDIUM. The presence of Balantidium in the LARGE INTESTINE leads to DIARRHEA; DYSENTERY; and occasionally ULCER.

Synonyms: Balantidium coli Infection, B. coli Infection, B. coli Infections, Infection, B. coli, Balantidium Infections, Balantidium coli Infections, Balantidiases, Balantidium Infection, Balantidiasis