I read thru the vamp and bloodmoon expansion and saw nothing about this. In the Caldera Mages guild you can buy the only copy (that I know about) of the spell effect "weakness to disease" and since in the cannot be mod-ed xbox version you cannot get a diseasing spell, I was wondering if this spell can cause you to infect OTHERS with vampirism or werewolf-ishness?

I haven't been able to, but there seems NO OTHER USE OF THIS SPELL (unless it is maybe to make you able to play the vampire and werewolf quests after gaining disease immunity)

SilentThief