環球時報: 北京開始用肛門棉棒檢測病毒, 號稱對特定人群準確率更高
Beijing tests for COVID-19 using anal swabs, where virus may survive longer: experts - Global Times
https://www.globaltimes. cn/page/202101/1213668.shtml
https://www.globaltimes. cn/page/202101/1213668.shtml
專家表示了不同意見: 對一種呼吸道疾病, 這樣似乎沒什麼道理
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https://www.bloomberg.com/news/articles/2020-12-01/covid-infections-found-in-u-s-in-2019-weeks-before-china-cases
U.S. Covid Cases Found as Early as December 2019, Says Study
U.S. Covid Cases Found as Early as December 2019, Says Study
