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Cal Fire reports forward rate of spread of Wildcat fire stopped. No containment.

Is Whooping Cough Vaccine Working?

September 7, 2010 6:46 a.m.

A KPBS investigation has found that nearly two out of three people diagnosed with whooping cough in San Diego County this year were fully immunized. California is in the midst of the worst whooping cough epidemic in 50 years. The numbers raise questions about how well the vaccine works.

Related Story: Is Whooping Cough Vaccine Working?