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To the Editor.
—The report entitled "Cysticercotic Cyst Involving the Pleura," in the January issue of the Archives (139:115-116,1979), leads the reader to believe that cysticercosis results from the ingestion of raw pork. This is usually not the case. Ingestion of raw pork containing the cysticerci of Taenia solium results in the adult tapeworm taking up his abode in the intestine. This is the usual, less serious form of the disease in which man is the definitive host. The more serious form of the disease (cysticercosis) occurs when man is the intermediate host, and results from the ingestion of T solium ova present in food and drink contaminated by feces from a person harboring the adult worm or by autoinfection, when ova are carried from feces to mouth on the hands of infected persons, or by reverse peristalsis bringing ova back to the stomach or duodenum when they hatch.
Flake RE. Pathogenesis of Cysticercosis. Arch Intern Med. 1980;140(2):282. doi:10.1001/archinte.1980.00330140140044
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