The United States has seen a significant increase in chronic wasting disease (CWD) cases across 36 states, with concerns growing about the risk of human spillover. CWD, a fatal neurodegenerative disorder, affects deer, elk, and other cervid species. There is currently no vaccine or treatment for the disease.
Scientists describe the situation as a “slow-motion disaster in the making,” with infected animals dying at rates that outpace natural reproduction, potentially leading to population decline. The Centers for Disease Control and Prevention (CDC) advises hunters not to eat venison from infected animals, but many do not follow this advice.
Environmental contamination is also a concern, as CWD is caused by prions – abnormal, transmissible agents that can remain activated in soils for years. This has led to worries about toxic waste sites forming in areas where carcasses are disposed of.
Experts warn that the best defense against CWD is having healthy landscapes with natural predator-prey dynamics, rather than unnatural feeding practices and habitat disruption. The situation is particularly dire in regions like Yellowstone, where the concentration of elk and deer creates an ideal environment for disease transmission.
As the disease continues to spread, scientists are sounding the alarm about the risks to human health and the importance of taking action to mitigate its effects.
Source: https://www.theguardian.com/environment/2025/mar/20/chronic-wasting-disease-spread-zombie-deer-global-us-aoe