Students at Huntington Park high school get whooping cough shots on July 6, 2011.
Students at Huntington Park high school get whooping cough shots on July 6, 2011. Irfan Khan Los Angeles Times
Students at Huntington Park high school get whooping cough shots on July 6, 2011. Irfan Khan Los Angeles Times

Whooping cough vaccine failing for many patients

February 07, 2015 09:00 AM

UPDATED February 08, 2015 08:43 AM

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