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Pennsylvania, one of the states hit hardest by the illness last year, has recorded 207 whooping cough cases in 2025.
The U.S. has tallied 8,077 cases of whooping cough in 2025, compared with 3,847 cases in the same period last year, federal data shows.
Michigan's top doctor warns parents about heartbreaking consequences of vaccine-preventable illnesses like measles and ...
Whooping cough cases have surged in the US since the beginning of the year, infecting Americans at a faster pace than any ...
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