When my sons were in High School they raised hogs for Ag. We would take them to the Texas Tec Meat lab to be butchered. I ask the FDA inspector about wild hogs and he told me,"If I had to inspect them I would probably have to destroy 50% of them!"
http://www.noble.org/Ag/Wildlife/FeralHogs/10-Disease.htm
Lots of other information out there but I have to go to work lol