How do people protect themselves from vampires?

Vampires are commonly thought to be repelled by Christian crosses, and by garlic. You can wear a cross necklace, and possibly hang strings of garlic in your kitchen - it's good both for repelling vampires and for seasoning your food.

Of course, in the real world, people do not need to protect themselves from vampires, since vampires are mythical creatures (although there are sometimes people who think that they are vampires, and there are lots of people who like to pretend to be vampires or at least want to look like vampires).