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  1. Oregon whooping cough cases on track to beat state record

  2. Oregon health officials sound alarm, say pertussis cases ... - KTVZ

  3. Oregon whooping cough cases trend toward record, prompting …

  4. 827 whooping cough cases reported across Oregon | kgw.com

  5. Oregon reports sharp rise in whooping cough cases, urges …

  6. Oregon whooping cough cases increase 770%, prompting OHA …

  7. Oregon whooping cough cases rise sharply - oregonlive.com

  8. Whooping cough cases spike in Oregon, health officials warn

  9. Oregon health officials warn of rise in whooping cough cases - KPTV

  10. Whooping cough spreading in Clark County, officials worried as …

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