Board Thread:Skyrim/@comment-11204276-20130822224324/@comment-6881629-20150504100708

Like i said above already i think disease resistance like any other resistance is probably capped even though a Werewolf is said to be completely resistant to disease its probably only about eighty five percent resistant. As for Aurora's old questions about the Vampire Werewolf mix yes but it can be pretty buggy check Youtube as theres lots of videos on how to do it for console and PC.

With Dawnguard you may also stand a chance of contracting Vampirism from drinking from the Redwater Den Bloodspring or if you drink a Potion of Blood (also if a follower drinks) the potion seems to be very buggy though and not a good idea to use unless your already a Vampire.