Pfizer’s top scientist has dismissed criticism that the company is pushing the widespread administration of Covid-19 booster shots too aggressively and denied it should have developed a more potent jab to stave off “breakthrough infections”.
輝瑞(Pfizer)首席科學家駁斥了外界關於該公司過於積極推動廣泛接種新型冠狀病毒肺炎（COVID-19，即2019冠狀病毒病）加強針的批評，並否認該公司本應開發一種效力更強的疫苗來抵擋「突破性感染」。
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