Second booster shields elderly from Covid but protection wanes quickly: Study - TODAY

JERUSALEM/MASSACHUSETTS — 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.

JERUSALEM/MASSACHUSETTS 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… [+1380 chars]

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