What are Dracula's "rules" for humans turning into vampires?
This question is interesting because it sheds light on one of the crucial features of Bram Stoker's Dracula, namely that, as Mary Shelley's Frankenstein, it is essentially a novel about science. Although the figure of Dracula and the notion of vampirism were taken from folk mythology, the main characters of the novel are Jonathan Harker, a logical, rational lawyer, and Dr. Van Helsing, a doctor and scientist. Both vampirism and its cures in the story act according to rigorously logical rules, despite the atmosphere of Gothic horror.
The first step in turning a human being into a vampire is that the vampire needs to bite the human three times separated by intervals of at least 24 hours and drink the human's blood; Dracula favors the neck as the location for the bites. The effect of this can be partially reversed by a transfusion of human blood. Next, the human must drink the vampire's blood. Finally, the human must die as a human and rise as a vampire.