Survival of the Strongest: Apocalyptic World

Astrid and her father had been through hell. Her mother died from a deadly disease along with half the world, now the virus controls her. It started in America when a new disease had been tested but control was lost over it and caused chaos. Five years later, zombies continue to occupy the world, leaving very little traces of humanity. A cure is yet to be found - if possible - and only the strongest will survive. Not the strongest physically, but mentally. How long will it take until the virus occupies you too? Most importantly, how long can you keep from losing your mind?