Mad Cow disease (Spongiform disease) occurs due to -
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
CJ virus
Arena virus
Kuru virus
Parvo virus
Virology