chronic wasting disease

Elk and bison
U.S. Fish and Wildlife Service

Michael Osterholm is worried. He directs the Center for Infectious Disease Research and Policy at the University of Minnesota. He's also serving a one-year stint as a "Science Envoy for Health Security" with the State Department. And he told Minnesota lawmakers that when it comes to chronic wasting disease, we are playing with fire.

Prion Research Center
Rae Ellen Bichell / KUNC

Researchers first identified chronic wasting disease way back in the 1960s. Soon after, Michael Miller got sucked into working on it.

"Yeah, sucked into it is really right," he said.

Miller is a senior wildlife veterinarian with Colorado Parks and Wildlife. Back then, local wildlife scientists were studying captive mule deer at a facility in Fort Collins, Colorado. They were trying to figure out how to help mule deer in the wild survive harsh winters, but the animals kept getting sick and dying.

Julien Chatelain / CC BY-SA 2.0

The question of where chronic wasting disease came from reopened in the spring of 2016.

Roy Andersen was monitoring reindeer in Norway. He’s a research technician with the Norwegian Institute for Nature Research. On a rare, sunny day, Andersen and his colleagues were doing what they often do in the spring: blasting across a snowy plateau, chasing a herd of about 500 wild reindeer.

Heather Swanson
Rae Ellen Bichell / KUNC

Heather Swanson and Ryan Prioreschi monitor wildlife with the City of Boulder. They're standing in knee-high golden grass on a slope where the Rocky Mountains start slumping into the plains — the epicenter of a now-international animal epidemic. The ecologists have their binoculars out and they’re staring right at the problem.

A fawn is running circles around the rest of the herd, with the boing of a muscular slinky toy.

Ryan Hagerty / U.S. Fish and Wildlife Service

Chronic wasting disease is crippling deer populations in the Mountain West, around the country and in bordering Canadian provinces. It's not a bacterium or a virus or even a fungus, but caused by something called a prion, a type of protein that all mammals have in their bodies.

Mule deer
Ryan Moehring / USFWS

Hunters in Colorado are being advised to be on the lookout for a contagious disease that kills deer.

The Daily Camera reports chronic wasting disease has now spread to 24 states, including Colorado.

And, while it has yet to happen, there is some concern it could spread to humans who hunt and eat the meat.

Warren Brown / Flickr

Senators from across the country and on both sides of the aisle have introduced a bill to tackle a problematic illness of deer, elk and moose.

It's called chronic wasting disease. Like so-called "mad cow," it’s a prion disease, meaning that it is not caused by viruses or bacteria, but instead by aberrant proteins in the nervous system.