Well: Whooping Cough Vaccine Lags in Efficacy
An analysis of more than 32,000 Californians older than 11 found the acellular pertussis vaccine to be 53 to 64 percent effective.
Well: Whooping Cough Vaccine Lags in Efficacy
An analysis of more than 32,000 Californians older than 11 found the acellular pertussis vaccine to be 53 to 64 percent effective.
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