"A new take on the zombie apocalypse!" The government has developed a way to vaccinate entire cities without consent or the possibility of refusal. But something went wrong, and a highly contagious combination of virus and prion has been unleashed, a middle-stage organism too dangerous to test. With emergency services overwhelmed, a small community hospital tries to combat the unthinkable--an illness that causes aggression, spreads through violence, and won't allow the dead to rest.