I'll worry about it as much as I worried about West Nile and SARS. That is, not much at all. The news has sensationalized so many ridiculous things that we'll never know when they're being real.
OTOH, a story on the Daily Show quoted Bush as saying that it's when the bird flu goes "bird, human, human" that it's dangerous. They followed the best logic I've heard about this thus far: the best solution, if that happens, is to give it back to a bird.
I can find plenty of birds around here should that happen.
