On December 2, 80 newly confirmed cases were reported in China, including 56 cases in Inner Mongolia, 10 cases in Harbin, Heilongjiang, 10 cases in Longchuan, Yunnan, 2 cases in Shanghai, 1 case in Beijing, 1 case in Shaanxi, and 10 new asymptomatic infections in Yunnan. According to experts, covid-19 epidemic prevention and control situation is still grim and complicated. In order to scientifically and accurately prevent and control the epidemic situation and strictly prevent the input of th...