A deer carcass tested positive for a highly contagious prion disease in Yellowstone National Park last month. With the discovery of the first case of chronic atrophy disease in Yellowstone National Park, the Centers for Disease Control and Prevention (CDC) warned that the deadly brain disease could one day spread to humans. According to the CDC, a deer carcass in the Wyoming area of the park tested positive for the contagious prion disease, which is found mainly in North America, Canada, Norway and South Korea. The disease can also cause weight loss, staggering, weakness and neurological symptoms. The disease has been observed in animals such as deer and has been dubbed "zombie deer disease" because it causes changes in the brains and nervous systems of these animals. According to the CDC's website, some animal studies indicate that CWD may pose a possible risk in some species that eat meat from affected animals or come into contact with infected deer or elk brain or body fluids. The disease affects animals with salivation, lethargy, lethargy, emaciation, staggering gait and a distinctive "blank stare". The disease is considered fatal and there is no known cure or vaccine. Although no human cases have been reported so far, scientists warn that the disease can infect humans, according to the report. Epidemiologists say that just because a "jump" case has not yet been recorded does not mean it will never happen.