Hundreds of years ago, before there were scientific explanations for every day occurrences (like diseases) people would explain them with superstitions and magic. If you sneezed, it was because you were possessed, if you were too hairy it was because you were a werewolf, if your young children were naughty it was because of the fairies …etc. Nowadays, we have completely logical explanations for these things. Keeping this in mind, you can understand why countless historians and doctors have tried to explain the birth of the vampire myth. For more information, go here.
I remember hearing a story on NPR about how after a family member dies of TB, if you then became ill you had to dig up the body and make up a draft using a piece of their heart. I can't even imagine thinking a dead member of my family was trying to suck the life out of me and then having to dig them up. Very troublesome.
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