I did watch and enjoy this film and although it does have zombies; I don't class it as a zombie film.
I realise to some people this may be a grey area; how can a film with zombies in, not be a zombie film?
The same way a film about wild life showing lions is not about lions.
The film was about a corrupt lab which experimented with chemicals and because of sabotage the end results were zombies.
By the same reason, if Chronicles book 3 comes out, there will be zombies in the book. I think any story about the Deep South has to have them; there is a lot of influence from the West Indies and to not include zombies in my opinion is wrong.