Health officials investigating increase in whooping cough cases among children in Montgomery County, Pennsylvania - WPVI-TV
- Health officials investigating increase in whooping cough cases among children in Montgomery County, Pennsylvania WPVI-TV
- Whooping cough outbreak reported at a Montgomery County high school NBC Philadelphia
- Whooping cough detected in Montgomery County; what you need to know CBS Philly
- Whooping Cough Outbreak At Plymouth Whitemarsh HS Patch
- Montgomery County Health Officials Battle Rising Whooping Cough Cases Among High Schoolers Hoodline