The Apocalypse

Phillipa is an 18 year old girl living during a global apocalypse.
New cases of an unknown disease have been popping up out of no where and it's forced the world to go into hiding.
People who are infected don't act like themselves and have a sudden urge to kill anything that moves.
Phillipa and the survivors at her school go into hiding, avoiding any and all other people.
But when she meets one particular victim of this new virus, things start to change for her.