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Microbes live everywhere! They are in the air, in the soil, in the cafeteria... even on you and in you. In fact, your body is home to trillions of these tiny living things!

Wherever you go, you are picking up new microbes and leaving some of your own behind. There are a lot of different kinds of microbes. Only a few can make you sick. Most kinds are totally harmless to humans. Many are very helpful to us.

Image Credits:

Illustration by Bob Staake