What is the tissue-invading worm infection associated with eating undercooked pork?

The tissue-invading worm infection commonly linked to the consumption of undercooked pork is Trichinosis. This disease is caused by the Trichinella species, which are parasitic roundworms. When humans consume raw or inadequately cooked pork that contains the encysted larvae of the worm, it can lead to infection. Once ingested, the larvae are released in the intestines, where they mature into adult worms. The adult female then produces larvae that can invade the muscular tissue, leading to a variety of symptoms including muscle pain, fever, and gastrointestinal issues.

Ascariasis, hookworm infection, and filariasis are associated with different causes and transmission routes. Ascariasis is primarily caused by the roundworm Ascaris lumbricoides and is typically linked to ingestion of contaminated soil or food rather than pork. Hookworm infections occur from larvae penetrating the skin, often through soil, and are not related to pork consumption. Filariasis is caused by filarial worms transmitted through mosquito bites, and it does not involve pork at all. Thus, Trichinosis stands out as the specific infection connected to undercooked pork.