If you guys already watched the movie called "QUARANTINE", then you know what's the story all about, but if you haven't, then this image below might be a clue;
And yes, the movie is like a CLOVERFIELD, where there's a LOT of shaking cameras in the movie. Well, my friend, Fungo, made a review about the movie and... you'll watch it yourself. It's funny. xD
Note:- There's some scenes that might be a bit disturbing, especially the rat's been stomped, but the director says that he recorded 2 scenes, and that is;
1.) The ones that's running is the real rat.
2.) The one's that been stomped is the doll.
And here's the video of my friend's review:-