Sooo original rich-man-is-a-cunt story with the edginess of a 20-something. Technically nice, fun story structure. Aging of the actors was awful at times. It's a minor thing but body language, voice etc just stick out a bit too much.
While fascinating all the theories and speculation are pointless. There isn't supposed to be any answers here. You can't trace the infection, it's impossible to know who's got it at the moment it matters the most.
Personally not a fan of the style at all and the film was a chore to watch all the way. Ian Miller's work stood out and some of the rotoscoped scenes. It's a weird mix of things for adults and some for children, not making its mind. A mess.