Whooping Cough Vaccine May Lose Potency


By Molly Clifton

Kids may lose immunity to whooping cough in the years after they get the fifth dose of the DTAP vaccine, which protects against the disease.

The study in the journal Pediatrics tracked the immunization records of children in Oregon and Minnesota and compared them to cases of whooping cough.

They found an increase in the highly contagious disease in children in the six years after they got the fifth dose of the vaccine.

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