yeah it comes from rats and swamps.. books say that there are still zombies in california in the mountains just sitting there like in i am legend they just huddle in the dark till something walks in on them then they attack.. i have lots of weapons, explosives and fighting skills so u need help let me know.
Well according to "the manual" to reanimate, it needs to be a fresh body with an intact brain and be infected with the virus. SO, even if the corpse is buried six below were infected how would they get out of a secured hardened coffin covered with about 1,500 pounds of earth on it with only human strength to attempt their escape? So according to "the manual" (again, sorry), and I quote, "...the fact remains that zombies have not and never will rise from the grave." (The Zombie Survival Guide p.86) Hope this helps.