A study has confirmed that 26 vaccinated Florida toddlers all got sick with whooping cough (B. pertussis) after receiving the DtaP vaccine in 2013. All of the children, aged one to five year olds, attended the Tallahassee preschool and had received four doses of the pertussis vaccine (DtaP) – according to official CDC recommendations. Thevaccinereaction.org reports: Let’s examine the evidence to see if it is logical to make a big deal out of kids in a preschool classroom infecting each other, plus infecting other kids in their homes with whooping cough, even though all of them had been vaccinated. Pertussis Vaccine Only 45% Effective in Vaccinated Preschoolers The study, conducted by CDC and Florida public health officials, was published inEmerging Infectious Diseases on January 15, 2016 and revealed that pertussis vaccine effectiveness among children attending the preschool was estimated to be 45%. The average number of days from last vaccination to onset of pertussis symptoms in the pre-schoolers was 22 months, with seven children having been vaccinated within the previous year. During their investigation, public health officials found that “it was apparent that many physicians were hesitant to provide a diagnosis of pertussis and did not test for this disease, [...]