Pfizer Inc. and BioNTech SE said initial lab studies show a third dose of their Covid-19 vaccine may be needed to neutralize the omicron variant, results that will accelerate booster-shot drives ...
网页链接Pfizer Inc. and BioNTech SE said initial lab studies show a third dose of their Covid-19 vaccine may be needed to neutralize the omicron variant, results that will accelerate booster-shot drives ...
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