Containment is Key

Objectives
Kill 3 Bog Overlords, 6 Coilfang Lepers, and obtain an Irradiated Gear from Mekgineer Steamrigger, then return to Naturalist Bite inside the Steamvault.
 * slain (3)
 * slain (6)
 * Irradiated Gear

Description
The naga are working with leper gnomes to spread a horrific disease across Zangarmarsh. It's already spread throughout the Steamvault.

Clear out anything that's been contaminated and bring me the central gear from Mekgineer Steamrigger, quickly!

Rewards
You will receive:

Progress
Be as thorough as possible. The fate of Zangarmarsh depends on it.

Completion
I'm glad that we were able to contain before it spread across all of Zangermarsh or futher. Thank you.

Gains
You will receive:
 * 10820 XP