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This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?

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Whooping cough, also called pertussis, can cause fatal respiratory failure in infants.

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Now a study finds that one way to help protect the very young from this disease is vaccination, of kids a few years older than the babies.

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The recent resurgence of pertussis led to a 2006 recommendation by the Centers for Disease Control and Prevention that adolescents be vaccinated.

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The current study used pre-2006 data to estimate the number of babies who would have been hospitalized for pertussis had the vaccination effort not occurred.

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Researchers found that the actual number of infants hospitalized in the years since the adolescent immunization program started was far lower than what would have been forecast.

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For example, in 2011 adolescent vaccination led to a greater than 70 percent reduction in infant hospital cases.

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Credit goes to so-called herd immunity: protected people means more dead ends for an infection trying to spread.

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The work is in the journal Pediatrics.

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Sadly, a thousand babies still got sick.

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Vaccinations for people of all ages will help smother pertussis in the crib.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.

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