Yep - seen the results of this plague. Tons of dead bodies lying around the Auction House (in-game version of eBay) in Ironforge on the Silvermoon server on at least a couple occasions. If you see this, RUN! If you get far enough away fast enough, you won't die.
BTW, I know I sound like a major nerd (I'm in my 40's), but I'm actually a responsible adult with a good paying job, wife, and 3 teen/20ish kids, and this game really does rock. I've been playing various video games off & on since the early 80's, when time permits, and this is the best that's come along so far. Highly entertaining, extremely realistic, HUGE in scale/complexity & versatile in the kinds of things you can do. Something for everyone, unless you're one of those holier-than-thou types that turns their noses up at computer games and makes fun of others who find them entertaining.
If you do /pvp in Ironforge when the plague hits, you won't get infected.