從 0: 00 至 24: 00 十一月 4, 在北京報導了Covid-19的一例新病例已確認的重陽性肺炎; 沒有新報告的本地確認案件, 可疑病例和無症狀感染者. 簡, 31, 出生於湖北, 在瑞典工作. 發燒發生在十月 11-12, 2020. 在十月 14, 2020, 她在 …

Combined with comprehensive epidemiological investigation and big data analysis, the researchers revealed that the virus source in the concentrated epidemic situation in Xinfadi market in Beijing is very likely to be cold chain imported food in overseas epidemic areas, and proposed that cold chain transportation may be a new way for SARS-CoV-2 to spread. On June 11, 2020, a case …