Mad Cow disease (Spongiform disease) occurs due to -: (A) CJ virus, (B) Arena virus, (C) Kuru virus, (D) Parvo virus
Answer is A. prion disease in animals include scrapie,mink encephalopathy,BSE madcow disease.These are caused by slow virus group B. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:556,557