Does anyone know more about this Blood Plague?

[Iolair]

Greetings all.

I don't play WoW, but I found a tidbit of interesting information on a Plague players could get from a mob called Hakkar.

http://news.bbc.co.uk/1/hi/technology/4272418.stm

I was hoping some of you guys could fill me in on this because that article got me curious :)