[Diarrhea associated with Trichomonas hominis in a newborn infant]

One female newborn infant with protracted diarrhea in whom associated Trichomonas homonis trophozoites were identified, is presented. Diarrhea in the infant persisted more than 30 days while in the hospital. Another causes of diarrhea, such as metabolic disorders, and bacterial, parasitic or viral infections were not identified. When furazolidone treatment was administered, the therapeutic response was very good, diarrhea disappeared and normal weight increase rate was recovered. It is pointed out that T. hominis might be a potential intestinal pathogen on human beings, specially on immunocompromised hosts, as newborn and malnourished infants are.