Whooping cough numbers continue to increase in Michigan - WOODTV.com
- Whooping cough numbers continue to increase in Michigan WOODTV.com
- CDC: Pertussis case reports 5 times higher than at this time last year The Washington Post
- Michigan health officials warn residents about increase in whooping cough cases WDIV ClickOnDetroit
- Whooping cough spikes dramatically among Missourians STLPR
- More than 1,000 whooping cough reports across Washington, including 2 in Kitsap Kitsap Sun