Lot of states have spent a lot of money just trying to figure out how the stuff is transmitted. I think that hunters transferring whole deer for meat and deer heads for mounting play a major part in the CWD problem. If the prions are the problem and they reside in the spinal/brain tissue it only makes sense that when deer are cut up for meat and the antlers are removed for mounting at a taxidermist then that would be the perfect way for the buggers to be moved across the country. Information I have read says that light heat and freezing doesn't kill the prions.