Zombie deer are not a joke. A new prion-based disease that infects wild deer has been found in about half the states and provinces of the USA and Canada. It’s called Chronic Wasting Disease and works the same way Mad Cow or Creutzfeldt-Jakob Disease works to destroy the brain of those infected. Prions don’t infect cells. They are malicious protein-like molecules that infect proteins and other genetic building blocks of life. Like Mad Cow, the disease is untreatable, incurable, and always fatal. It’s also hard to spot. Hunters, be aware and be safe.