Day Zero.

You were at school doing social studies and then something flys through the window and shards of glass hit everyone you look to see what flew through the window when it suddenly lunges at a student biting him you managed to see it and it has animal features. The student screams and you try to help him but the thing lets go and the student starts convulsing and starts to grow animal features. You grab a chair and get ready to strike if needed. [Signs of infection! convulsions, a rapid amount of hair growth, tail,snout,pointy ears and pupils changing colors]