A programming oversight enabled the debuff to classic wow gold disperse beyond the site of the Hakkar boss fight and to the world at large. Much like rats fueled the Bubonic Plague, characters' trained animals spurred the Corrupted Blood outbreak. Hunter characters may summon and discount pets to fight in their side at will. Once ignored, all the consequences on the pets have been paused until it's called back out again. In effect, the critters could contract Corrupted Blood during the boss fight, disappear then display the symptoms again elsewhere in the world map when they were summoned. There it might spread to other pets and players which came in contact with them.
Cities such as the dwarven town Ironforge and orc town Orgrimmar were overrun within hours. Non-playable characters, who could not die due to special coding, would also catch the effect, meaning any participant who passed by them could receive Corrupted Blood.
Once word got out, players hunted frantically for information about what was going on.
"We kept a close eye not just on our guild conversation but on world chat too to determine where not to proceed. We did not want to grab it."
The spread of Corrupted Blood, and also the player's behavioral modifications to it, caught the attention of epidemiologist Dr. Nina Fefferman, who had been a World of Warcraft player in the time of buy wow gold classic the episode. Fefferman achieved to her colleague Dr. Eric Lofgren. In 2007, both published a paper which detailed their findings, such as complicated models of individual behavior during a pandemic. Fefferman says the episode has helped inform her current research into predictive modeling about covid-19.