When confronted and attacked, Hakkar would cast a hit point-draining and highly contagious debuff spell called 'Corrupted Blood' on players. The epidemic began with the introduction of the new raid Zul'Gurub and its end boss Hakkar the Soulflayer. The Corrupted Blood incident (or World of Warcraft pandemic ) was a virtual pandemic in the MMORPG World of Warcraft, which began on September 13, 2005, and lasted for one month. The Corrupted Blood debuff being spread among characters in Ironforge, one of World of Warcraft's in-game cities.
