Een grote Engelse spoiler:
To cure the disease, Caius tells you to go to an old Telvanni Wizard in Tel Fyr
name Dvayth Fyr. He gives you a dwemer artifact and some potions of rising
force. If you ask him, he'll also mark Tel Fyr on your map.
To get there, take the guild guide to Sadrith Mora. Now swim/levitate/waterwalk
over to Tel Fyr. When there, it's not hard to spot.
Enter the Onyx hall and go west up some stairs. Go through the door to Hall of
Fyr. Now drink one of the Rising Force potions and go up. When you are one
level up, levitate north and talk to Divayth. Give him the artifact as a gift,
and ask him about the disease. He'll tell you about a potion that might work
but you have to go down to the Corprusarium to get a pair of boots first. So go
back to the Onyx hall and go east down some stairs. There should be a door to
the Corprusarium here. Enter.
There's an argonian here that'll tell you about the rules. No attacking the
diseased in the Corprusarium. So run through the old gate straight north and
through the door to the Corprusarium Bowels. Yagrum, the guy with the boots, is
in the western part of this cave.
He's could actually be the last dwarf left! This can be interesting if you're
doing the quest with Trebonius to find out what happened to the dwarves.
When you have the boots. Go back to Divayth and give him the boots. Drink the
potion there and be amazed. You are now immune to all sorts of diseases. Yay!