- WA Health: Significant summation successful reported cases of pertussis (whooping cough) Whatcom News
- Whooping cough, walking pneumonia cases connected the rise News Channel 5 Nashville
- Washington sees monolithic spike successful whooping cough cases, 25% of cases from The Puget Sound KIRO Seattle
- CDC: Pertussis lawsuit reports 5 times higher than astatine this clip past year The Washington Post
- WA sees monolithic spike successful whooping cough cases The Seattle Times