Whooping cough vaccination fades in 3 years

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By MIKE STOBBE - AP Medical Writer | AP – 2 hrs 36 mins ago

ATLANTA (AP) — The whooping cough vaccine given to babies and toddlers loses much of its effectiveness after just three years — a lot faster than doctors believed — and that could help explain a recent series of outbreaks in the U.S. among children who were fully vaccinated, a study suggests.

The study is small and preliminary, and its authors said the results need to be confirmed through more research. Nevertheless, the findings are likely to stir debate over whether children should get a booster shot earlier than now recommended.

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tags: vaccine, vaccination
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