At the time we didn't know prion disease could be transferred between species. There's no evidence that scrapie (sheep prion disease) or CWD (deer and moose pri

At the time we didn't know prion disease could be transferred between species. There's no evidence that scrapie (sheep prion disease) or CWD (deer and moose prion disease) can be transmitted to other species. BSE is seemingly a unique prion disease that can affect other mammals.