Measles is a rare but potentially deadly disease in children. According to a recent article by Tom Frieden, M.D., director of the Center for Disease Control and Prevention (CDC), there are about 60 cases of measles in the U.S. each year. In 2013, however, there have been 175 reported cases in the first 11 months.

And while that number doesn’t seem outrageous, measles is a very serious disease. According to Frieden, “Measles is so contagious that if one person has it, 9 of 10 people close to that person who are not immune will also become infected.”

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