Michigan’s state health department reported more than 1,500 pertussis infections as of December 8, 2024—the highest number of cases in 10 years, according to Mlive. By comparison, the state saw a 596-case average from 2017 through 2019. And Michigan isn’t alone. The Massachusetts department of public health also reported a 5-fold increase in the number of confirmed cases of pertussis with 754 cases on the books through the end of November, compared to 115 in …
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