Here's one guys opinion about food poisoning in wild animals: (link follows)
Wild animals do suffer from salmonellosis, toxoplasmosis, campylobacter and other illnesses. There have been documented cases in a number of species and there have been cases of human exposure after eating or contacting many species, including at least one case of salmonella food poisoning after eating a rattlesnake (it is in the list of references under Salmonella in the PubMed database but I can't remember the exact reference). I have treated wildlife for a number of years in association with WildCare, Inc. and have seen food poisoning on a number of occasions, some of them confirmed through lab testing or necropsy exam. People seem to believe that wild animals live a long and carefree existence and nothing could be further from the truth. They are heavily parasitized in many instances, suffer from nutritional deficiencies on a regular basis and often die very young. I do not know the specific reference but from memory I think the average lifespan of foxes studied in one study was 9 months. This is a far cry from the lifespan we expect from our pets.
http://www.vetinfo4dogs.com/drawmeat.html