Zombies!

"While its name derives from Haitian folklore, the zombies we’re most accustomed to originate from the mid-20th century. In particular, we’re talking about the creatures in I am Legend by Richard Matheson and the classic films of George Romero (Night of the Living Dead, Dawn of the Dead). Divorced from all semblance of their former selves and highly infectious, these shambling corpses have only one desire: to consume human flesh."