For the want of a test..
D000818:Animals; D002417:Cattle; D007562:Creutzfeldt-Jakob Syndrome / Q000175:diagnosis* / Q000453:epidemiology; D004196:Disease Outbreaks; D016643:Encephalopathy, Bovine Spongiform / Q000175:diagnosis* / Q000453:epidemiology; D005060:Europe / Q000453:epidemiology; D006801:Humans