Report to Apothecary Jerrod at Garren's Haunt in Tirisfal Glades.
As you're probably already realizing, the Royal Apothecary Society is a widespread organization. We take our plague-alchemy seriously. It is our belief that the more agents we have performing experiments, the sooner we will realize our objective.
One of our agents performs his work at a small encampment to the north of here. His name is Jerrod, and he could use an apprentice of your... stature.