'Zombie' Deer Disease Spreads to Yellowstone National Park

Yellowstone National Park has confirmed its first case of "zombie deer disease," formally known as chronic wasting disease (CWD). The illness, caused by prions, gradually shuts down the deer's body, leading to weight loss, stumbling, and loss of energy. CWD has been reported in 31 states across the US and has no treatment or vaccine. While there have been no reported cases of humans contracting the disease, the CDC advises caution for hunters and individuals in contact with deer or elk, recommending protective clothing, avoiding sick animals, and testing meat for CWD before consumption.