On the contrary: vampires are an allegory for the upper class, being parasites who suck the blood (wealth) from society.

(Also, the nature of being immortal means you have plenty of time to wait for your investments to appreciate, so all but the newest vampires should be wealthy.)

That’s what Bram Stoker’s Dracula was about, which has shaped modern ideas of vampires.

Older stories were a little bit more “monster in the dark”. There was a fairly famous case where 18th century New Englanders took the heart out of a young dead woman, burned it and fed it to her brother to break a vampiric curse.

Since the actual curse seems to have been tuberculosis, this didn’t quite work.