germs germs

The CDC is trying to stop E. coli and other bacteria that have become resistant to antibiotics because they can cause a deadly infection. Science Photo Library/Getty Images/Science Photo Libra hide caption

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Science Photo Library/Getty Images/Science Photo Libra

Federal Efforts To Control Rare And Deadly Bacteria Working

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Jack Gilbert, co-author of the book "Dirt Is Good," says kids should be encouraged to get dirty, play with animals and eat colorful vegetables. Elizabethsalleebauer/Getty Images/RooM RF hide caption

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Elizabethsalleebauer/Getty Images/RooM RF

'Dirt Is Good': Why Kids Need Exposure To Germs

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