The correct answer is A, Taenia solium.  Ingestion of eggs passed in human stool results in a larval infection called cysticercosis; ingestion of cysticerci in meat (pork) results in gut infection with the adult tapeworm.  Lack of sanitation, poor personal hygiene, and permitting pigs to ingest human feces are important risk factors for the transmission of cysticercosis and taeniasis.

Click here to open a new window with a schematic diagram showing the life cycle of Taenia solium.  Close the new window to return to this page.