Is there a need for a COVID booster shot? Here's what WHO says

Given the emergence of multiple new SARs-COV-2 variants, health authorities are extremely concerned about vaccine efficacy. The Delta variant, which is a possible driving force of the second wave of COVID-19, is said to be highly infectious and transmissible, which can also cause breakthrough infections.

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Jun 22, 2021 - 09:03
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Is there a need for a COVID booster shot? Here's what WHO says
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Given the emergence of multiple new SARs-COV-2 variants, health authorities are extremely concerned about vaccine efficacy. The Delta variant, which is a possible driving force of the second wave of COVID-19, is said to be highly infectious and transmissible, which can also cause breakthrough infections.
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