When to know if you should go to a doctor after you've been bitten by an insect

The U.S. Centers for Disease Control reports illness from mosquito, tick and flea bites have tripled in just the last 13 years. SO is it time to panic?

Doctor Frank Serrecchia from Children's Hospital of Wisconsin is here to let us know what to watch out for and when a bite needs a visit to the doctor. 

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