Torkuda said:
Vampire-ism is intended to be a curse, I had read of one where only a family member or loved one could curse another to eternal life. I prefer the White Wolf Vampire the Masquerade, Anne Rice, Let The Right One In, True Blood or Dracula forms of the curse.
The bible Holy relics only work against vampires if the one wielding them is a true believer, that is the only way they work as seen in Dracula the early 90s movie. In other like Vampire The Masquerade they only work if the Vampire is a true believer, I preferred this one, say if the Vampire was a devout Jew, only a star or David would work against him/her not a cross, same for other religions.
Holy water Same as the Bible, and crosses.
running water Only ever saw this in Dracula, but he can bypass this rule by staying buried in his home soil.
spilled rice Nope on any of the ones I listed.
garlic Was supposed to work for Dracula, if I remember the book correctly they put it around Lucy's windows. It does not kill only repels a Vampire. Dracula used mind control he had already begun to call her out, so that didn't work. Does not happen as far as I know in the others, possibly in Vampire The Masquerade, but only once again if the Vampire believes it will work.
not being invited in Common for all of them, mind control or suggestion depending on the age of the Vampire can bypass it.
decapitation This kills everything, human, zombie, werewolf, and in the morticians guide, is one of two sure signs of death. Decomposition is the last for the curious.
wooden stakes These only paralyze a Vampire, in Dracula and Vampire The Masquerade, then decapitation is used to finish the job, and the head is then separated from the body, as depending on the age of the cursed creature it can reform. Pretty sure Van Helsing explains the process to the others in Dracula.
silver Nope only werewolves in the others I listed, can be used to cause pain or bind a Vampire in True Blood, kind of a cool idea.
the sun Part of the curse is to never see the light of day again, and to live in forever darkness.
dead man's blood Used as a poison to weaken a vampire, like the what Claudia used on Lestat in Interview With A Vampire, giving him dieing children infected with polio. In others like The Masquerade the Vampire becomes a permanent carrier of the disease killing the herd of humans, this is only a death sentence as the other Vampires will kill him/her.
crucifixes See the Bible or holy water.
Played Vampire The Masquerade for years and was a goth from the late 80s to early 2000, even met a young woman who claimed to be a Vampire at a goth clothing store in Toronto... She was crazy, but so hot. I like your idea, the definition of a Vampire whether it is psychic or a physical Vampire that requires blood is what I like to see, but your idea has them only rumored to be Vampires, its an interesting take on it.