What results from accidental ingestion of eggs where the human becomes an intermediate host?

Cysticercosis results from the accidental ingestion of eggs from the parasite Taenia solium, which causes the human host to become an intermediate host. In this case, when humans ingest the eggs rather than the larval forms (cysts) present in undercooked pork, the eggs hatch into larvae within the intestines and can then migrate to various tissues such as muscles, the brain, and other organs. This can lead to serious health issues, including seizures and other neurological problems due to the formation of cysts in the brain.

The other disorders listed are associated with different parasites and modes of transmission. Trichinosis is caused by the consumption of undercooked meat containing juvenile forms of the Trichinella parasite. Ascariasis results from the ingestion of eggs from the Ascaris lumbricoides worm, while strongyloidiasis is caused by Strongyloides stercoralis, which is transmitted through soil contaminated with the larvae rather than via egg ingestion. Therefore, the key to understanding cysticercosis is recognizing the specific lifecycle of the Taenia solium and how the accidental ingestion of its eggs alters the typical host role, turning humans into intermediate hosts with significant health implications.