Vampires of the non-extinct variety? How interesting. [ not a lie; the sanguine vampiris are very much eradicated in his version of the world. he may have their blood coursing through his veins, but that's because vampires coupled with his human ancestors. he's not a full-blooded vampire. ]
Oh, I'm human, but I'm far from being an ordinary, baseline blank slate of a human being with genetic material that's free of any latent abnormalities. I'm an Abnormal, if you're looking for the technical term. And where you're going the Dracula route, it's actual more in the Nicolas Flamel direction. Longevity, son. It's a thing.