The Omicron coronavirus variant is spreading far faster across the US than health officials had expected, accounting for almost three-quarters of new cases, according to data from the Centers for Disease Control and Prevention.
根据美国疾病控制与预防中心(Centers for Disease Control and Prevention)的数据，新冠病毒Omicron变种在美国各地的传播速度远远快于卫生官员的预期，占新增病例的近四分之三。
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