Orgrimmar

We have a breakthrough! Our zombie specimens have given us new insight into the nature of the Scourge's plague. They have born rotten, delicious fruit... Take this box to Orgrimmar. Inside is a head that is infected with the zombie plague, and something else we have devised -- an anti-plague. The two plagues battle within the zombie brain, and that brain is the key to a cure, I am certain of it. Bring the box to my assistant, Apothecary Karlov. He attends Warchief Thrall in Orgrimmar.