A person born with a caul, tail, born out of wedlock, or one who died an unnatural death, or died before baptism, was doomed to become a vampire.

• 罗马尼亚吸血鬼的成因:婴儿生来伴有胎膜、尾巴，或非婚生婴儿，非正常死亡的人，以及在洗礼之前死亡的孩子都被认为有成为吸血鬼的可能。