Answer mad cow disease
Explanation:
100% case mortality rate
Humans may acquire the disorder by eating diseased meat products. When it comes from cattle, the disorder is called Creutzfeldt-Jakob disease and ultimately leads to dementia and death. The condition is rare.
The disease is marked by rapid mental deterioration, usually within a few months. Most people eventually lapse into a coma.
Treatment focuses on keeping the person as comfortable as possible.
