Several of the most fiercely contested states in the US presidential election showed sharp increases in coronavirus cases on Thursday, pushing the number of infections nationwide to their highest levels since a summer outbreak.
周四，美国总统大选竞争最激烈的几个州的新型冠状病毒肺炎（COVID-19，即2019冠状病毒病）新增病例数急剧增加，这使得全美感染人数升至夏季疫情爆发以来的最高水平。
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