Can you imagine? Within the survivor bases, statues of the Zombie King were erected, and every morning, tens of thousands of people would kneel before the statues of the Zombie King, treating him as their deity and praying for his blessing upon his followers.
This pathological behavior persisted even though there were those who wanted to stop it; they were met with even more frenzied riots when they approached the armed forces.
On other continents, several terrifying high-level zombies emerged, like the radiated breed of zombies in North America that could deal fatal damage to any living being. Even other zombies, when nearing these radiated breed zombies, would melt into a puddle of blood from the radiation they emitted, and any zombies that fortunately didn't die would become one of the radiated zombies.