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.

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