• Ex-CDC-chief: Study is an eyeopener on how virus is spreading and how little we know
원문출처 : https://www.cnn.com/asia/live-news/coronavirus-outbreak-02-09-20-intl-hnk/index.html
원문출처 : https://www.cnn.com/asia/live-news/coronavirus-outbreak-02-09-20-intl-hnk/index.html