I find what this guys says interesting just as the other video but in it you will hear they 1st tested this by putting wild sheep in a pen with domestic sheep. I think you find that same information in the other video.
If it is domestication of animals that cause these diseases, why arent we eradicating domestic live stock? I find the CWD issue very interesting. Seems to be some agendas at work here on both sides of the FENCE if you ask me.