- Clark County has 406 cases of whooping cough — the highest fig successful Washington The Columbian
- Whooping Cough declared assemblage outbreak successful Spokane County & North Idaho KREM.com
- Washington authorities sees 'sharp increase' successful whooping cough cases, mirroring emergence crossed US ABC News
- Health officials impulse vaccines arsenic whooping cough, chickenpox surge successful Clark County KATU
- WA sees monolithic spike successful whooping cough cases The Seattle Times