No doubt all those corpses around the Mayan pyramids did not make a positive contribution to their health care system. That might have something to do with the germs problem.

BTW Bingley - we are also very susceptibled to bacteria and viruses today. We happen to have the CDC in Atlanta and a bunch of medical researchers with electron microscopes - but still we are very vulnerable. It's too soon to conclude that we will not see another outbreak of some horrendous illness. The world today is a very crowded place.

Pete2