Yellowstone's first-ever case of "zombie deer" disease sparks national concern.

Chronic Wasting Disease (CWD) affects deer, elk, moose, and even reindeer.

Symptoms include stumbling, lethargy, and a haunting "blank stare."

CWD epidemic has been reported across the U.S., from Texas to New York.

Discovery in Yellowstone elevates CWD's visibility nationwide.

CWD has significant ecological implications, experts warn.

Scientists believe the risk of CWD jumping to humans is currently low.

Increased collaboration and monitoring efforts in Yellowstone to combat CWD.

Don't forget about the reindeer during the holiday season!