The diagnosis of balantidiasis can be an intricate process, partly because the related symptoms may or may not be present. However, the diagnosis of balantidiasis can be considered when a patient has diarrhea combined with a probable history of current exposure to pigs (since pigs are the primary reservoir), contact with infected persons, or anal intercourse. In addition, the diagnosis of balantidiasis can be made by microscopic examination of stools in search of trophozoites or cysts, or colonoscopy or sigmoidoscopy to obtain a biopsy from the large intestines which may provide evidence for the presence of trophozoites. Monitoring the contacts of balantidiasis patients.īalantidiasis can be treated with tetracycline, metronidazole or iodoquinol.Some specific safeguards include the following: Preventative measures require effective personal and community hygiene. The first study to generate balantidiasis in humans was undertaken by Cassagrandi and Barnagallo in 1896. However, this experiment was not successful in creating an infection and it was unclear whether Balantidium coli was the actual parasite used. The first case of balantidiasis in the Philippines, where it is the most common, was reported in 1904.
Currently, Balantidium coli is distributed worldwide but less than 1% of the human population is infected. Pigs are a major reservoir of the parasite, and infection of humans occurs more frequently in areas where pigs comingle with people. This includes places like the Philippines, as previously mentioned, but also includes countries such as Bolivia and Papua New Guinea.
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