For the other territories, things were completely different. The two territories did not kill the people that had been secluded previously before they completed the transformation. And due to that reason, they were attacked from the inside even before the zombies outside of the territory attacked.
The strength of those people that had transformed, possessing black eyes, was extremely high. Those people that had transformed had actually turned into zombies.
It was just that there was a difference with the normal zombies. These zombies had intelligence that those other normal zombies did not possess. And this was something that gave the members of these two territories and others that were present within the entire world a lot of trouble.