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Texas CWD per Dr. Deer

Deer have survived cwd for millennia…….we just know have named it and have to ability to detect it…..imagine id we never named or recognized covid 19- would we ever known the difference ?
If this is the case, then why haven't they developed resistance to it?

Perhaps because it's truly a domestic sheep disease and domestic sheep were a continent away until the last 500 years? And perhaps because deer and sheep naturally avoided each other until forced into the same facility?
 
Where do get that deer have survived it for millennia? Doesn't the evidence point to CWD showing up in penned deer exposed to other livestock in the 2nd have of the last century.....and that it first jumped from sheep to deer about 60 years ago...spreading from enclosure to enclosure as captive deer were bought and sold, before jumping the fence to the wild?
Lots of sources. Yes it was diestbidentified in whitetail
Deer in the 1960s, but there are evidence of the disease dating back much further than that, including a strain that potentially affected bison back in the 1800s- safe to say its older than we are giving it credit for
 

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