Whooping cough cases surge to record levels in US, CDC says The HillMDH: Teenagers contributing to spread of whooping cough KSTPWhooping cough cases up 342% since 2023 as U.S. outbreak continues. What to know about symptoms and spread FortuneWhooping cough cases up more than 340% over this time last year Fox News800+ cases of whooping cough in WA, 600+ in OR Fox 12 Oregon