• Here's how the novel coronavirus outbreak unfolded
• Why China changed how it counts virus cases three times
원문출처 : https://www.cnn.com/asia/live-news/coronavirus-outbreak-02-22-20-intl-hnk/index.html
원문출처 : https://www.cnn.com/asia/live-news/coronavirus-outbreak-02-22-20-intl-hnk/index.html