Vampire Lord4 books in series
Vampire Lord: Book 1 Publisher's Summary
They said AIDS had gone airborne.
They said we needed a vaccine.
They said there were no side effects.
They were wrong.
Now, nine of every 10 humans have changed, and they need the blood of the unchanged to live. Their thirst is unquenchable, and they can’t be stopped from destroying our world.
And I’m one of them.
Disclaimer: This series contains horrific apocalyptic scenes as well as detailed sex scenes between the male protagonist and multiple women.