Worst U.S. whooping cough outbreak in a decade has infected thousands - NPR

Worst U.S. whooping cough outbreak in a decade has infected thousands  NPRWhooping Cough Is Spreading Again after Years of Relative Quiet  Scientific AmericanFalling Vaccinations Contribute to Rising Pertussis Rates  MedscapeRisk of national outbreak of whooping cough 'now considered high'  StuffWhooping cough but without the whoop? Pertussis cases surge in southwest Idaho  Boise State Public Radio