The crazies is another film by Romero. Its about a gov war agent being used on a town. everyone infected either dies or becomes homicidal. Not zombies in the traditional sense. kinda like 28 days "zombies" arent really zombies. but its still really good and scary. there's an original and a remake. try them both.
I havent seen the chenobyl dairies. I think the chenobyl incident is scary enough without zombies.
and I forgot to mention about food. fishing can be another means of survival.