This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Mad Cow disease (Spongiform disease) occurs due to 
Select and explain. 
A. C J virus, B. Arena Virus, C. Kuru Virus, D. Parvo Virus
A: C J virus
Answer: A: C J virus 
Explanation: Mad cow disease or bovine spongiform encephalopathy i.e. Caused by “prions”
“PRIONS” are unconventional transmissible agents, proteinaceous in nature.”
Diseases caused by prions are
Kuru
Creutzfeldt Jakob Disease.
Gerstmann Straussler Scheinker Syndrome
Fatal Familial Insomnia.
Scrapie Of Sheep
Transmissible Encephalopathy of Mink.
Bovine Spongiform Encephalopathy (Mad Cow Disease)