The Dork Circus
The result of a vampire’s bite, Vampire Venom is some sort of disease or curse that can slowly transform a living creature into an undead one. However, it can be cured by a dedicated healer armed with the proper curatives (athelas is generally considered to be chief among the necessary medicines). The PCs have learned from Kulgan that only true vampires can pass on the disease, not dhampyrs.
Vampire Venom follows the normal disease template and rules. Its level is equal to the level of the Vampire whose bite caused it. The initial stage allows the affected to only regain half the normal amount of hit points from any healing.