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Reuters
Reuters
Health

Second booster shields elderly from COVID but protection wanes quickly - study

FILE PHOTO: A woman helps an elderly woman who just received a booster dose of Pfizer vaccine, as the country starts the booster vaccination program for the general public amid the rise of the Omicron variant in Jakarta, Indonesia, January 12, 2022. REUTERS/Willy Kurniawan/File Photo

A fourth dose of the Pfizer/BioNTech vaccine lowered rates of COVID-19 among the elderly but the protection against infection appeared short-lived, a large study in Israel has found.

The second booster's protection against infection dwindled after four weeks, Israeli researchers showed in their study published on Tuesday in the New England Journal of Medicine.

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