I just read something from a site called e-drug that TamiFlu may not be effective against Bird Flu, but they seem to be more concerned about that in the Third World countries. You shoud subscribe to this site. It's like a world forum; you get daily emails from all over the world about different issues regarding World Health. Though some of the stuff is tedious, they come up with some really interesting stuff from time to time. And, of course, it's free.