Is 'Zombie Deer Disease' a threat to humans?

In over 22 states and parts of Canada, deer are succumbing to a neurological condition that has some speculating about a potential zombie deer apocalypse. These deer, affected by a disease the Centers for Disease Control and Prevention refers to as "chronic wasting disease," exhibit zombie-like symptoms: wandering aimlessly, with lifeless expressions, excessive drooling, drastic weight loss, and an unusual lack of fear of humans. But does this so-called "zombie deer disease" pose a risk to humans by affecting our brains, similar to how mad cow disease did in the past?

Sadly, the answer is "yes." Just like mad cow disease, a brain-affecting condition known as bovine spongiform encephalopathy that has crossed over to humans, zombie deer disease is transmissible to people. The infectious agents responsible for chronic wasting disease are called prions, and these proteins have a dangerous ability to evolve into infections that can impact other species. The concern arises from the possibility that humans consuming infected deer meat could fall ill. And it's not just deer causing alarm. Besides white-tailed deer, mule deer, and reindeer, moose and elk are also falling victim to chronic wasting disease.

The encouraging news is that, as of February 5, 2018, there have been no reported cases of humans contracting zombie deer disease worldwide. This is especially reassuring, given that the disease has been in existence since 1967, when it was first discovered in Colorado's deer population. With the popularity of consuming venison and elk meat, concerns about possible transmission remain significant. This concern is particularly relevant for hunters, whom the CDC advises against harvesting meat from areas known to have chronic wasting disease.