VAMPIRES....DID YOU KNOW?

Vampires are commonly supposed to transfer their vampirism by biting you.  However, if every vampire were to bite one person every day thereby spreading vampirism about, it would take less than two months for everyone in the human race to become a vampire.

Incidentally, it is no part of the vampire legend that they cannot go out in daylight.  I don't think this belief antedates Bram Stoker.