[Name] Mad Cow Disease/Mad Zombie Disease [Source] The Simpsons Boston Legal [Symptoms] 
Similar to the virus shown on Zombieland this plague is non-canonical in The Simpsons universe but nonetheless appears in Treehouse of Horror XX. Similar to Zombieland, it is transmitted through cows. In this segment, Krusty develops a new burger from cannibalistic cows and the effects of this mutate into a virus which turns the victim into a zombie in a matter of seconds. Symptoms include drooling saliva at the mouth, blackened bags under the eyes, and extremely pale skin and psychotic behavior like paranoia. The virus can be transmitted through biting. The only known cure is Bart Simpson, as he ate one of the infected burgers but was immune. On the David E. Kelley series Boston Legal, William Shatner as Denny Crane blames his outré behavior on Mad Cow Disease.