Dracula also attacked the X-men, turning Storm into a vampire.
Reading this comic taught me that it's not a crucifix that stops a vampire, it's the faith of the person holding the object.
When Dracula was attacking, Shadowcat tried to stop him with a crucifix, and it fails because she's Jewish, and has no Catholic faith.
Dracula advances, and places his hand on Shadowcat's throat. However, he recoils in pain not realizing he placed his palm over her necklace, which had a Star of David on it.