Vaccine denialism causes USA’s worst whooping cough epidemic in 70 years

Steven Salzberg, at Forbes Magazine, has reported that the USA is experiencing the worst whooping cough epidemic in 70 years. In addition, the CDC has stated that as of  August 4 2012 (pdf), there are 21,000 cases and 10 deaths in the United States from whooping cough(Bordetella pertussis) year-to-date. Wisconsin has the highest rate of infection, while Washington, as I have discussed on a number of occasions, has one of the highest total number of pertussis infections. 

Increases in pertussis outbreaks by state from 2011 to 2012.

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