美疾控中心:新冠病毒去年12月就在美国出现

2020-12-02 央视新闻 央视新闻

美国疾控中心研究人员近日发表的一项研究显示,早在2019年12月中旬,新冠病毒就已经在美国出现,这比美国官方报告的第一例本土确诊病例还要早一个月,比中国正式确认新冠病毒早数周。

美国疾控中心研究人员近日发表的一项研究显示,早在2019年12月中旬,新冠病毒就已经在美国出现,这比美国官方报告的第一例本土确诊病例还要早一个月,比中国正式确认新冠病毒早数周。

美疾控中心:新冠病毒去年12月中旬就在美国出现

在这项研究中,美国疾控中心把收集于2019年12月13日至2020年1月17日的全美9个州居民的7389个献血样本进行了检测。结果显示,有106个发现了新冠病毒抗体,说明新冠病毒感染可能于2019年12月就在美国出现。

美国媒体报道说,越来越多的证据表明新冠病毒在中国境外出现的时间要早于先前的认知。此外,研究还发现新冠病毒不仅比之前已知的更早在美国出现,而且病毒在美国的传播比检测结果表明的还要广泛得多。

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    2020-12-04 zutt
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    2020-12-03 公卫新人

    新冠肺炎,疫情何时才能消失

    0

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    2020-12-03 146921e6m52暂无昵称

    厉害!

    0

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