Capítulo 180: War Of Civilization.

The bites of the promodial vampires carry a virus that can convert other races into lesser vampires. So a single one can turn a whole city into a nest of vampires if given enough time.

If those lesser vampires feed on powerful creatures or many creatures over a long period of time, they will evolve into high vampires. But the only way for high vampires to become primordial vampires is to kill one and replace it. 

He was intrigued by what he read. As he was reading the small piece of racial information about the vampire race, Wrath noticed and exclaimed, "I know these guys."

That drew his attention. He asked, "You do?"

"Yeah, I do. They are a very powerful race that has managed to build a multi-planetary civilization."

"Multiplanetary? Like across many planets?"