First of all Thank You for looking by and also for your nice upvote @bluebaikal.

Well, the process is already orthodox, Affected People -> Danger -> Survive, you'll never be able to change that, this is what horror films and films of other genres have in common and without that this kind of films cannot live, but the story behind it is very unorthodox and not mainstream moderate, which invites you to a discussion and just to name one: Social class differences.