Wild mushrooms are one of the most concentrated sources of agaritine, a naturally occurring toxin. Some research indicates that agaritine has a carcinogenic effect. This vegetable can be safely eaten cooked because cooking destroys this toxin.
Raw eggs may contain Salmonella bacteria; these bacteria can cause a food-borne illness. The best way to avoid illness is to cook eggs until the white and yolk are firm and to serve them immediately.
Raw milk straight from the cow can contain Salmonella, and bacteria such as E-coli. Though the U.S. Food and Drug Administration (FDA) recommend that milk be pasteurized, raw milk is legally sold in some states.
Raw pork or undercooked pork may contain bacteria—E. coli or Salmonella. As with other meats, you want to cook the pork to at least 145ºF.
Oysters can contain bacteria and viruses from the water where they are harvested. The Vibrio bacteria can cause illness that ranges from mild to severe, with Vibrio Vulnificus being the severe form.