"During Dagoth Ur's blight, the Tribunal Temple erected a structure called the Ghostfence, with the hopes of keeping the Sharmat's faithful contained. Unfortunately, the Fence's power diminished with time, causing it to become a wall rather than a full dome. At that point, infected wildlife and windborn blightstorms were able to pass beyond the barrier, though the potency of the storms dropped off not too far from it. Corprus would more commonly spread through contact or curse by way of Dagoth Ur's infected, which made their way under the Ghostfence through a tunnel they dug, accessed via an ancient stronghold. In short, while there were ways to limit the spread of Corprus, the effectiveness would vary."

"The new variant seems less virulent. I haven't heard yet of it becoming airborne, though perhaps that is only because this new Sharmat's power is still developing. That being said, it does seem to respond to tonal magic, if only a little."