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Continue to Chat2010 Whooping Cough Rates Highest in 50 Years Despite Vaccinations https://ecochildsplay.com/2011/02/23/2010-whooping-cough-rates-highest-in-50-years-despite-vaccinations/
2010 Whooping Cough Rates Highest in 50 Years Despite Vaccinations https://ecochildsplay.com/2011/02/23/2010-whooping-cough-rates-highest-in-50-years-despite-vaccinations/