Trichinosis? Can't you send a sample for testing, or are they all suffering from it? I know that hunters over here can send samples to a lab to be tested.
Feral and wild populations of pig and bears, yes it's there in some places. Mostly pin or round worms is what you may get from the meat.
Sending samples to a lab? Going to cost a bit if you go to a private lab. In Iowa, we have some chronic wasting disease testing available for cervid species (deer/elk) for free for hunters, but that is ending this year for the most part due to reduction in federal money to wildlife departments.