Final answer:
To understand major foodborne illnesses caused by parasites, you should know about zoonoses infections, ways of transmission, and common symptoms.
Step-by-step explanation:
When it comes to major foodborne illnesses caused by parasites, there are some characteristics you should understand. First, the parasites that cause foodborne illnesses are mostly zoonoses, meaning they are animal infections that can be transmitted to humans. For example, the pork tapeworm (Taenia solium) is ingested when people eat inadequately cooked infected animal tissue. Second, parasites like Giardia and Trichinella can be spread through contaminated water or by consuming raw or undercooked pork or wild game. Lastly, it's important to know that symptoms of foodborne illnesses caused by parasites can include gastrointestinal symptoms such as vomiting and diarrhea, as well as fevers, aches, and pains.