标普500指数成份股莫德纳（MRNA）上涨4.8%，延续了周一的反弹上涨势头。上周五美股疫苗板块普遍下挫，原因是特朗普政府卫生官员计划在本周向美国疾病控制与预防中心（CDC）下属的一个重要疫苗咨询委员会提出新冠疫苗与25名儿童死亡案例相关的主张。

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