the CWD prion can get into soil, if you burn the soil at the game farm, you cant get rid of it...many states in the USA have battled CWD and its here to stay. If a migratory bird coming from the USA poops somewhere in Ontario after it crossed one of the great lakes and a deer comes into contact, the deer may contract CWD. These prions can get into the roots of plants and then spread when other animals eat them, etc, etc. Pretty scary info on this topic.
There are also a few podcasts about CWD I encourage you to give a listen, some controversial viewpoints on the subject (Ted Nugent on the Joe Rogan Experience, I believe Steve Rinella did one as well on Meat Eater)
One other theory about CWD and wildlife agencies willing to react quickly with a "cull" to prevent CWD is that these agencies are working with insurance companies to thin the herd under the guise of CWD..you get the drift... what they aren't saying is some deer in a herd die from it and some seem to be resilient to CWD (otherwise states like Colorado would have no deer left as they have had CWD since the 1970's)
Not trying to stir the pot but I am certainly questioning the quick and heavy handed reaction in Quebec..would hate to see that implemented by our MNRF..