Many of these beliefs are myth or fiction but there lives a society claiming to be real vampires today, and they assert the following:
Vampirism is the disease or abilities related to vampires.
Vampirism can be conducted two ways. Either someone is turned (created by another vampire), or awakened (become one by him/herself in time). When someone shows the symptoms of being sensitive to sunlight, prefering to be awake during the night, having very acute senses, and instincts, somewhat resistant to common illness.. as well as having a thirst/hunger nothing seems to be able to ease, and an easily triggered 'secondary personality' the beast, who is violent, very temperamental, and impatient. V
Related to this community, vampirism DOESN'T mean immortality, death when contacting garlic, silver, or sunlight, blood tears, consumption of nothing but blood, sacred symbols are not lethal to- nor feared by vampires, they do show up in mirrors, they dont heal instantly, they are not all pale, not all beautiful, they're not all evil, and they dont live a secluded life away from human society.
Vampirism encourages dressing in dark clothes, filing some of your teeth to look like fangs, drinking another person's blood etc.
It also encorages certain ritals much the same as Satanism
"That is foul dude, I heard they cut each other and drink eachother's blood, what losers"