DPT/DT/DTPH/aP  Whooping Cough  DPT vaccine failure

CDC trying to explain away pertussis vaccine not working

Hahahahahahahaha – this is hilarious! Dawn
 
CDC Statement On Why Vaccinated People In Calif. Are Contracting Pertussis
Vaccines for pertussis are very effective, but no vaccine protects forever in 100 percent of those vaccinated. Protection wanes over time, which is the reason for intermittent “booster doses.” High vaccination coverage in communities and in families also protects others, including those who are too young to be vaccinated or whose immunity from vaccination has waned.
CA is experiencing a significant increase in pertussis circulating in the community. That disease pressure is causing more fully vaccinated and recently vaccinated people to become infected than in a typical year. It does not mean the vaccine is not working. Rather, the higher the vaccine coverage, the higher the proportion of cases who have been vaccinated. This is commonly misinterpreted to mean that a vaccine is not working, when in fact it means that coverage is high.
http://www.kpbs.org/news/2010/sep/07/whooping-cough-vaccine-working/