I learned a lot. I didn't realize that they were blood suckers and blood drinkers, life suckers or essence drinkers, some alive, some not, the deceased possibly becoming the blood-thirsty creatures of the night because of improper burial procedures. And there were psychic vampires! Who would have thought? And even succubi could even be referred to as vampires, apparently.
And yes, those myths have been found pretty much all over the world, from ancient Mesopotamia and ye old Mexico all the way to Malaysia and Morocco. (But not Japan; the only thing I found about Japan was that they took their vampire myths from the West, not even a borrowing from China, with their myths of the hopping vampire. Odd.) And we had to check them out, too, for our workshop. I think Jacquie had nightmares after all this research. I know I did.
Anyway, we're doing a workshop for SavvyAuthors.com starting this Monday. We're both sort of weirded out about the topic, but it was all fascinating. Yikes.