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Do you wear flip-flops on city streets?

Flip-flops may be the footwear of choice during the summer, but some microbiologists say that they can be dangerous to your health -- even deadly. They harbor thousands of bacteria which can get into your bloodstream through a foot wound and make you ill and, if left untreated, can possibly kill you. The New York Daily News had two pairs of flip-flops tested for germs, and found 18,100 bacteria on them. Do you have a fondness for flip-flops? Do you ever worry about getting sick from wearing them? Are you willing to take the risk or will you switch to shoes for warm-weather walking?