Can a vampire catch a disease by feeding from ill vessels?
Generally, no, though they may certainly carry a vessel’s disease if they are sloppy feeders or don’t practice what little hygiene is required. Some Kindred have communicated diseases by bringing leftover blood in their mouths or on their fangs into contact with open wounds on subsequent vessels. Such vampires are sometimes known as “vectors” or “plague dogs.” Other vampires rarely stand for this, as it may result in epidemics that arouse the attentions of government disease-control agencies that may come around, sticking their noses into just why the disease has become so widespread.