The Summer Camp Zombies by Steven Farkas
Summer Camp Zombies is a novelette set in a youth summer camp. They are told by camp leaders to blindly follow the way of a strange man who is thought to be a religious icon, but he is not what he seems. Soon the campers find themselves turned into zombies. They feast upon the counselors. In no time the whole camp, and perhaps the whole world, will be set upon by zombies and their dark and cloaked leader.