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Researchers warn ‘zombie deer disease’ could spread to humans

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Chronic wasting disease ( CWD ) is spread by infectious proteins known as prions.

Prion diseases, which include mad cow disease, are always fatal.

Symptoms of prion disease in humans include dementia, difficulty walking, hallucinations, confusion and fatigue.

Researchers don’t yet know exactly what it takes for the prion to infect a human if it’s ingested.