This was predictable. Microorganisms respond to chemical physical changes in an environment. Everything that you do to your body affects the microorganisms that live there.

It's a wicked bug, ... It's an environmental organism that's wherever the soldiers are -- in the water, in the trenches. It's able to survive literally anywhere -- in food, on human skin, and in the bowels and intestines of humans. And it has become highly antibiotic-resistant, with all sorts of enzymes that incapacitate antibiotics and a pumping mechanism that literally pumps out the medicine.

The Secret Life of Germs.

How strange yet fitting that the future of nature's greatest creature, man, depends upon an intimate cooperation with nature's least, the germ.

Eighty percent of all infections are transmitted by direct and indirect contact.