Why does the theory that SARS-CoV-2, the virus that causes Covid-19, leaked from a laboratory in China endure so persistently?
원문출처 : https://www.cnn.com/2021/05/29/world/covid-19-theories-intl-cmd/index.html
원문출처 : https://www.cnn.com/2021/05/29/world/covid-19-theories-intl-cmd/index.html