Prologue (Alex)

It's a story with ,any POVs and it has zombies.
One day Alex was eating dinner with her family. Her mother worked for this agency in a top secret mission. They were trying to make the first ever zombie the experiment went all right, but when they were putting the zombie in the cage, it bit one of the scientists which bit the other one and soon it was a zombie apocalypse. Many people were still alive, there were not many zombie but the infection started spreading around everywhere. In school they reached you self-defense and you had to bring a gun everywhere. What will happen to Alex and her family?