Reporters from the novel coronavirus pneumonia epidemic prevention and control work held in Shaanxi on the afternoon of 21, a news conference was informed that the epidemic of Xi'an appeared hidden transmission, forming a certain scale of community communication. Now there are spillover cases, affecting Xianyang, Yanan, Dongguan and Beijing. Experts judged that the current round of epidemic situation in Xi'an has entered the peak of case reporting. Liu Feng, member of the Party group of Shaanxi Provincial Health Commission and director of the provincial CDC, introduced that since December 9, A total of 96 Local confirmed cases (91 in Xi'an, 3 in Yan'an and 2 in Xianyang) have been reported in the province. As of 12:00 on December 21, 7620 close contacts and 17452 secondary close contacts have been identified in the province. At present, Xi'an has designated 1 high-risk area and 13 medium risk areas. So far, Shaanxi CDC has sequenced the whole genome of 36 local case samples, all of which are delta mutants, which are highly homologous to the overseas imported cases found in pk854 passengers of Pakistan inbound flight on December 4. (Xinhua News Agency)