US government advisers have recommended the approval of a fourth Covid-19 jab developed by Novavax, expressing hopes that it can help boost the nation’s flagging immunisation programme as a new wave of infections sweeps across the population.
美国政府顾问建议批准诺瓦瓦克斯(Novavax)研发的第四种新冠疫苗，并表示希望在新的感染浪潮席卷整个人口时，它能帮助促进国家的免疫接种计划。
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