i'm 56 years old and with all that i've seen i have to conclude that sometimes there are things that defy logic and you should not try to figure out, we had a very cold winter and i'm in and out all day at work and yet got through the winter with nothing more then a slightly sore throat, so now it getting warm and nice, was in the high 70's F today and i woke up with a really nasty headcold, i probably have sneezed more today then the last 20 years put together.....somethings just make no sense at all