Last night on The History Channel I saw a program called "The New Plague" which painted a doomsday scenario of the avian flu turning into a human pandemic.
It was like a post-apocalyptic scifi movie plot: hundreds of millions dead, half the earth's population infected, the world economy worse than the Great Depression, mass graves, riots, lack of basic necessities for survival, etc.
I think the scientists and public health officials interviewed went a little too far. While this doomsday scenario is not entirely impossible, it is unlikely given the quickly growing awareness of the threat and the measures being undertaken to deal with it. We may not be fully prepared right now, but we will be in the near future -- at least as much as it's possible to be prepared for such an enormous potential problem.
There is no human pandemic yet and it may never happen with the H5N1 avian flu virus. All human flu comes from bird flu virus that mutates and every year a sizeable percentage of the human population is exposed without catastrophic results. The last great pandemic was 87 years ago and, although it killed a lot of people, the world didn't turn into a dead zone. And that was before we had anti-biotics and anti-viral drugs (most flu victims actually die from pneumonia which can be treated with modern drugs.)
"The Next Plague" had a sort of disclaimer at the end. One public health official, admitting that avian flu might not become a human pandemic, said he was sorry if the warnings scared people unnecessarily, but it was better to err on the side of caution. I thought another official made a better point. He said the worst effects of a pandemic could be caused by panic, hoarding, lack of cooperation, etc.
