not coincidentally, maine has a high rate of whooping cough cases � 21.1 per 100,000 people in 2015, compared to 10.3 per 100,000 nationwide. .
elizabeth loder, md, professor of neurology, harvard medical school; chief, division of headache, brigham & women's hospital.
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cnn sans ™ & © 2016 cable news network.
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