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斯坦福教授:美国新冠疫情是公共卫生的灾难性失败,Absolutely catastrophic。
(11/) 2022-04-24 08:24:42
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(0/) 2022-04-19 11:35:42
CDC血液抽样调查估计1.4亿美国人已感染新冠,占人口43%
(0/) 2022-04-19 11:34:44
粗略估计,美国大约有1/3的县(人口1/2)在新一轮新冠疫情采用了自发的反向隔离
(0/) 2022-04-19 11:34:00