You need to know something about vampires first.
In the novel Dracula, Count Dracula (not Duckula
) used to be a sincere Christian. He serverd the god and defeated the enemies during the war. He put the dead bodies of the enemies into sticks. His enemies were afraid of him. They rumoured that Dracula was killed during the war so as to lower the morale of Dracula's soldiers. Rumours spreaded to Dracula's castle. His wife was so sad that she finished herself. After Dracula came back from the war, he found his lovely wife was dead. He was extremally sorrowfull. To make things worse, the fathers told Dracula that her soul won't rest in Heaven because she's suicide. Dracula was outraged and he choped the cross with his sword and swore that he would against the God. As a curse, he had an endless life but his life was lasted by drinking blood. The catch of his eternal life was that he's afraid of the crossed and sunlight. And He had no reflection in the mirrors.
Technically, Muslins and Christians have the same god despite what they call him, Allah or Jehovah. But those people against each other and have been fighting for thousands years. Muslins don't wear crosses. And there's no Red Cross organization in Muslin countries. They have Red Crescent organization instead.
I hope the aboving blah blah makes sense. lol