In this world vampires and werewolves ar enemies and humans are often trying to avoid them because they don't want to get killed or become one of them

One day you are just walking at the night on your way home but suddenly a bat came out of nowhere and bites you on the neck before fly away and then a wolf came out of nowhere and bites you on the arm before disappearing into darkness,you didn't think much of it until started to feel weird...