User blog comment:Enriquearreguin777/Vampire/Vampirism cure/@comment-25762071-20180515044753/@comment-25762071-20180515231753

As I recall, the 50's novella "I Am Legend" was about vampires caused by disease, as opposed to the movie which replaces them with zombies (which were more popular at the time.) The vampirism there was aused by bacteria. The vampires themselves find a vaccine for some of their symptoms, but it is not a cure. Mind you, I have only read/heard summaries of the book, not the book itself.

The other books I've read about Vampires either have evil, uncurable vampires, or are called "Twilight" so that's probably not going to be too helpful. There's also a tabletop RPG from the 90's called "Vampire: the Masquerade" which also had a "Dark Ages" spinoff that might be a place for ideas on differrent takes of vampires.