For many years, market pork was fed "slop" besides a conventional pork production diet (corn and rye), and there was a very real chance that the meat contained a parasite that could cause a disease known as trichinosis. Only thorough cooking could destroy it. Today, there is almost nil chance of contracting trichinosis from pork, but partially from habit, and partially because most people do not like the taste of undercooked pork, it is still widely cooked to the "fully white" stage.
There is also the same risk of contracting salmonella from pork that there is from any other processed food product that has been improperly handled, but no more or less. The most common cause of salmonella poisoning is probably poorly handled eggs.
Uncooked or undercooked pork can contain harmful bacteria such as salmonella, E. coli, and Trichinella spiralis, a parasite that causes trichinosis. It is important to cook pork thoroughly to kill any potential bacteria and parasites.
The traditional answer to this is Trichinella, an internal parasite that can cause severe organ and muscular disease in humans. However, in most first world countries (western Europe, Canada, US, Australia, etc.), this parasite is no longer a concern as food safety and meat inspection services have controlled or eradicated this parasite.In developing and undeveloped countries, Trichinella is still a major concern that causes disease annually.
raw or undercooked pork
It is safe to eat if it does not contain uncooked/undercooked eggs (whites or yolks) and has not gone bad/stale/off.
A trichina worm, specifically Trichinella spiralis, is typically found in uncooked or undercooked pork. These parasites can infect the muscles of pigs, and humans can contract trichinosis by consuming infected meat. Proper cooking of pork to an internal temperature of at least 145°F (63°C) can effectively kill the larvae and prevent infection.
magnets live in pork if uncooked
Liver flukes can be caused by eating undercooked pork products. Undercooked pork contains a bacteria that can cause liver flukes.
Food poisoning and tape worms.
Trichinosis...
Trichinosis
Pork is the most common uncooked meat a trichina worm will infect.
It claims the apparition is the result of some undercooked potato or some uncooked meat