Plague Bearer
3 point Flaw
Your blood is infected with plague or some equally virulent disease. You might not show symptoms or suffer its ravages, but you can transmit it to all your victims. Even worse, you cannot rid yourself of the disease by purging your blood (as described on p. 256 of Dark Ages: Vampires). Alchemy or thaumaturgy may offer a cure, as may the healing arts of the vanishing Salubri. If your condition is known, you might be forbidden access to many cities or restricted to feeding from lepers and other diseased wretches. Cainites who drink your blood must check for infection normally, although they may cure themselves by purging.
The modern version, Disease Carrier is worth 4 points, since modern people do not accept plague outbreaks as a normal part of life.