The joint prevention and control mechanism of the State Council held a press conference on the 22nd to introduce the implementation of the optimization measures for epidemic prevention and control, and to make full efforts to deal with the current epidemic situation, and answered questions from reporters. Mi Feng, spokesman of the National Health Commission and deputy director of the Propaganda Department, said that we should unswervingly adhere to the people first, life first, the general strategy of "external defense input, internal defense rebound", the general policy of "dynamic reset", resolutely overcome the mentality of paralysis and laxity, wait and see, adhere to the ninth version of the prevention and control plan and the twenty optimization measures, remain firm, do not deviate, and be based on prevention, early and fast, Scientific and accurate epidemic prevention and control. In the epidemic area, the epidemic situation should be handled quickly, risk areas should be accurately divided, nucleic acid testing should be organized in an orderly manner, risk groups should be effectively controlled, isolation work should be strictly standardized, and the "four responsibilities" of territories, departments, units and individuals should be fully implemented to stop the spread of the epidemic as soon as possible. We will continue to address the problem of "stepping up the ladder" and ensure that people's basic living and medical needs are met during the epidemic response period. "At present, the epidemic situation in China is still severe and complex, the spread of the epidemic in some areas is accelerating, and the difficulty of prevention and control is increasing." Hu Xiang, the second level inspector of the Department of Communication and Prevention of the National Bureau of Disease Control and Prevention, said that the number of newly infected people has continued to increase recently, the epidemic has spread widely and the transmission chain is complex, and densely populated cities have become key areas for epidemic prevention and control. Due to the characteristics of occult transmission and strong transmission of Omicron mutant, it is difficult to quickly identify and track early infected persons. The National Health Commission and the National Bureau of Disease Control and Prevention have sent a working group to urge and guide the local authorities to put 20 optimization measures into place, and provide on-site guidance and support for local epidemic situation disposal and prevention and control. Recently, the number of infected persons screened by social sectors in some regions is relatively high. Hu Xiang analyzed that the Omicron mutant is more insidious and spreads faster. If the epidemic is found late, it will spread widely in the community, making it much more difficult to prevent and control the epidemic. We should do a good job in regular monitoring and early warning, improve the sensitivity of epidemic monitoring, and strengthen the monitoring of risk workers, key institutions and key groups, so as to effectively detect and control risk personnel early. It is necessary to fully implement the responsibilities of the four sides of the territory, departments, units and individuals, and the localities, departments and units where no epidemic has occurred should implement various regular epidemic prevention and control measures; Once an epidemic situation occurs, the emergency command system should be started immediately, and all prevention and control forces should be mobilized to combat the epidemic quickly and with one heart to build a common front for prevention and control of the whole society. The nucleic acid detection force, flow adjustment force, isolation resources and the management of floating personnel should be effectively coordinated to form a joint force of prevention and control. Twenty optimization measures were proposed to strengthen the construction of medical resources. At present, the number of infected people in some places is growing rapidly, which puts forward higher requirements for medical resources. Guo Yanhong, Director of the Medical Emergency Department of the National Health Commission, said that, according to the requirements of the ninth version of the diagnosis and treatment plan, our country will implement classified treatment for COVID-19 infected persons, and for ordinary, severe and high-risk infected persons, they should be timely admitted to designated hospitals for treatment. A large part of the patients, especially those with asymptomatic infection, were admitted to the shelter hospital for treatment. Establishment of shelter hospital