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Boosting the effectiveness of COVID-19 vaccines – InDaily
Is a third shot necessary and if so, when? Vasso Apostolopoulos and Jack Feehan examine the research around booster shots.

Boosting the effectiveness of COVID-19 vaccines
Is a third shot necessary and if so, when? Vasso Apostolopoulos and Jack Feehan examine the research around booster shots.
(AP Photo/David Goldman)
An important factor in achieving herd immunity against…
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