World of Plague

The "plague" is an unknown nurse; it is not known exactly how it is transmitted, but it is suspected to be from the bite of vampires.

Week one: after being infected, the symptoms are "simple", the pupils more dilated.

Week two: after the first symptoms comes hunger, a monstrous hunger

Week three: After the prescription week, motor behavior begins to be noticeable, erratic movements, disordered steps in secondary school

Week four: After the fourth week, the skin becomes pale and develops a strong sensitivity to sunlight and fire.

Once transformed into a plague, the infected person's body undergoes a radical transformation.

The bodies grow to two meters, their skin becomes pale, their limbs lengthen, their jaws become distended, and their eyes become enormous.

Pests are extremely strong, fast, and aggressive.

But they are not very intelligent; a few of the transformed still retain vestiges of their humanity. The more intelligent infected can give orders to the more "brutish" ones, coordinate attacks, stand guard, and even "hide" humans as if they were cattle.

Another thing about pests is that they don't have a tongue; their intelligence is based more on an animal hierarchy than a social one—a hierarchy similar to that of wolf packs.

The Plagas' greatest weakness is sunlight, fire, and bullets, due to their sensitive skin.

Pests do not live outdoors; they often live in abandoned places, caves, and/or make nests underground to avoid coming out into the sunlight during the day.

While pests are dangerous... they are not exactly nomadic, since due to their territorial aggression, they usually fight among themselves and defend their territories rather than engage in extensive chases.

Another thing, "herds" in plagues are not exactly normal, they are quite rare.