This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Fatal familial insomia is associated with - 
Select and explain. 
A. Prion disease, B. Degeneration disease, C. Neoplastic disease, D. Vascular disease
A: Prion disease
Answer: A: Prion disease 
Explanation: fatal familial inaomnia is a human prion disease REF:ANATHANARAYANAN MICROBIOLOGY NINTH EDITION PAGE.557