W hooping cough has been on the rise in the U.S. for years—and cases are continuing to soar in 2025. Meanwhile, fewer Americans are getting vaccinated against it.  Here’s what to know about the ongoing surge in whooping cough cases. A bad year for whooping cough In 2021, the U.S. Centers for Disease Control and Prevention (CDC) reported 2,116 cases of whooping cough. In 2024, it reported 35,435 cases. So far this year, there have been 7,111 reported cases of whooping cough, according to an