Watch CBS News

U.S. sees a record number of whooping cough. What is causing the spike?

There’s a new alert about the highly contagious whooping cough. The U.S. is seeing record numbers of cases. Stephanie Stahl reports on what's causing this spike.
View CBS News In
CBS News App Open
Chrome Safari Continue
Be the first to know
Get browser notifications for breaking news, live events, and exclusive reporting.