"With the large-scale vaccination and COVID-19 mutation, the transmission of the virus has increased, but the pathogenicity has weakened, and the overall health risk to the population has tended to ease. China's epidemic prevention and control is facing a new situation and new tasks." On December 7, Li Bin, Deputy Director of the National Health Commission, pointed out at the press conference of the joint prevention and control mechanism of the State Council. On the same day, the Comprehensive Group of the Joint Prevention and Control Mechanism of the State Council issued the Notice on Further Optimizing the Implementation of the Prevention and Control Measures for the COVID-19, proposing ten measures to further optimize the implementation of the epidemic prevention and control. Focusing on these optimization measures, the joint prevention and control mechanism of the State Council held a press conference in the afternoon to respond to social concerns. The pathogenicity of the virus has weakened. The "new ten" is to actively optimize the leading group of the National Health Commission's epidemic response and disposal expert group. Liang Wannian pointed out that at present, the pathogenicity and virulence of COVID-19 variants have significantly weakened, the complete vaccination rate of the whole population in China has exceeded 90%, and the health awareness and health literacy of the people have significantly improved, all of which provide conditions for policy adjustment. "It is an important experience of epidemic prevention and control in China to persist in taking small steps and never stop, and actively optimize and improve prevention and control policies." Liang Wannian said that this adjustment was "an active optimization, not a passive one". The ten optimization measures are based on the characteristics of COVID-19 mutants and epidemic characteristics of the current major epidemic in China, through the study and judgment of the dynamics of the epidemic situation, the evaluation of the effectiveness of the current prevention and control measures, and comprehensive consideration. "In the past three years, we have constantly adjusted and optimized the prevention and control measures. Each optimization is very prudent, which is based on the previous prevention and control practices, and in-depth research and demonstration according to the problems found in practice. Each optimization is more scientific and accurate, focusing on virus characteristics, international and domestic epidemic situation, and changes in domestic and foreign prevention and control strategies, and adjusting according to the time and situation. Each optimization is to better protect the people We will work and live in a normal order and better provide security for the elderly, infants and other key groups. " Wang Hesheng, deputy director of the National Health Commission and director of the National Bureau of Disease Control, said. Focusing on scientific and accurate epidemic prevention is not to put forward further optimization requirements for risk area delineation and management, nucleic acid detection, isolation methods, ensuring people's demand for medical treatment and drug purchase, elderly vaccination, health management of key populations, normal social operation, epidemic related safety assurance, school epidemic prevention and control and other work under the "New Ten Rules". For example, except for nursing homes, welfare homes, medical institutions, kindergartens, primary and secondary schools and other special places, nucleic acid negative certificates, health codes and travel codes will no longer be checked; No longer check the nucleic acid test negative certificate and health code for trans regional floating personnel, and no longer carry out landing inspection. The epidemic prevention policy has become more relaxed, which is our intuitive feeling. However, some people wonder whether this means that the epidemic prevention policy has been "liberalized"? In this regard, Liang Wannian stressed: "This optimization is not completely open." Li Bin explained that the ten measures introduced this time can be roughly divided into two categories: one is focused optimization, which is mainly based on the characteristics of the virus and the epidemic situation, combined with the recent practical experience of epidemic response in various regions, to further optimize the ninth version of the prevention and control plan and some of the twenty measures. another