By Deidre McPhillips | CNN
Whooping cough has been surging in the United States for months and the latest data from the US Centers for Disease Control and Prevention suggests there are no signs of slowing.
There have been more than 32,000 cases reported so far this year, according to preliminary data from mid-December — about six times more than there were at this time last year and more than there have been since 2014.
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