But the Avian flu is much like the Spanish flu- in fact, they're probably directly related strains- and Spanish Influenza killed more healthy adults (ages 20 to 40) than it did children and elderly. It's odd, but people with weak immune systems seem to hold up better. Something I did not know until about 2 hours ago, when I found those links and read some of the material on them.
It also prefers warm climates. Most virii do. The idea that cold weather causes colds- a complete myth (except pnuemonia and hypothermia, those are very much about the cold). But Coxis (common cold) and Influenza prefer warm places. The reason you get more sick during the winter, is because typically in the winter you spend more time in close contact with a greater number of people. School, for one, comes to mind.



