On the 26th, the joint prevention and control mechanism of the State Council held a press conference to introduce the situation of epidemic prevention and control and vaccination. In the past week, 15 provinces reported new locally confirmed cases Mi Feng, spokesman of the National Health Commission, said that in the past week, 15 provinces reported new locally confirmed cases. We should respond quickly, seize the key "window period" in the early stage of collective epidemic disposal, resolutely and decisively take various prevention and control measures, and achieve "social clearance" as soon as possible; We should pay close attention to the implementation of prevention and control measures for key populations, key places and key links, and effectively minimize the risk of epidemic spread. This round of epidemic is characterized by the superposition of delta and Omicron variants Wu Liangyou, deputy director of the disease control bureau of the National Health Commission, said that recently, the domestic epidemic has the characteristics of multiple points, wide range and frequent occurrence, and the superposition of delta and Omicron variants. Judging from the epidemic situation in various places, Beijing, Tianjin, Shanxi, Shanghai, Shandong, Xiamen, Fujian and Jixi, Heilongjiang have recently detected that the infected people are isolated control or closed-loop managers, and the risk of further spread of the epidemic is low. Recently, the newly infected people in Suzhou, Jiangsu Province mainly come from the controlled population. The overall epidemic situation is in a downward trend, and the risk of community transmission is gradually decreasing. The local government is continuously strengthening the management of the sealed and controlled areas. The number of cases of Huludao epidemic in Liaoning Province has increased recently. This continuous tailing situation requires vigilance against the rebound and further spread of the epidemic. Red River infected persons in Heihe and Yunnan, Heilongjiang, are all concentrated in the local area. There are different simultaneous interpreting chains. The source of infection is still under investigation, and there is a risk of spread and spread. The locality is further investigating the track of infection activity and strengthening the screening and control of risk personnel. Recently, new cases of the epidemic in Lincang, Yunnan Province are concentrated in a local middle school. They need to be transported as soon as possible to isolate all teachers and students, speed up nucleic acid screening in key areas, and prevent the further spread of the epidemic in schools and communities. Recently, the spread of the epidemic in Dongguan City has been further strengthened, and the spread of the epidemic risk is high. The focus of the investigation and control of the epidemic in a community in Dongguan City has been further strengthened. The spread of the epidemic risk is high, and the spread of information in a community in Dongguan City has been further strengthened. There is a risk of further spread of the epidemic in Chengdu, Sichuan and Fangchenggang, Guangxi. The local authorities are speeding up the investigation and control of risk personnel to prevent the overflow of the epidemic. The epidemic in Wuhan, Hubei Province has spread to Beijing, Shandong, Hebei, Shanghai and other provinces (cities). All localities are stepping up the tracking and control of risk personnel, speeding up the investigation of spilled personnel, and preventing the further spread of the epidemic. At present, the epidemic situation in Hohhot, Inner Mongolia is still in a high platform stage, but the risk of community transmission and diffusion has decreased. The local government is making every effort to strengthen the disposal of community screening cases and the control of key areas such as sealing and control areas, and further implement various prevention and control measures. Wu Liangyou said that from the experience of epidemic prevention and control in China, the current prevention and control measures to deal with Omicron mutant are effective. The key lies in implementing the "four early principles" and compacting the "four responsibilities". The National Health Commission will guide the areas where the epidemic is occurring, speed up the organization of nucleic acid screening in key areas, strengthen flow investigation, timely standardize the isolation and control of risk personnel, and implement various prevention and control measures to ensure the overall stability of the epidemic situation. The epidemic situation in Hong Kong is in a period of rapid spread and accelerated rise Covid-19 said that wildly beating gongs and drums were being held in Hongkong. The central government has fully supported Hongkong's epidemic prevention and control work since the outbreak. The eight aid hospitals in the mainland are being built vigorously. The national health and Health Committee held a video conference with experts from the Hongkong Special Administrative Region on medical treatment of new crowns and phlebitis, and discussed the specific technical issues in detail. Two groups of experts from the mainland's anti epidemic medical and anti epidemic task force have been arranged to arrive in Hong Kong and have exchanges with relevant departments of the SAR government and medical workers. The communication between the mainland's anti epidemic expert group and Hong Kong is smooth. In addition, covid-19 specialists in the mainland will conduct video links with the Hong Kong expert group every day to make recommendations for the Hongkong epidemic prevention work. Wu Liangyou said that the central government will continue to fully support the epidemic prevention and control in Hong Kong, and mainland experts will continue to work closely with their counterparts in Hong Kong to do a good job in anti epidemic and anti epidemic work. "External defense input" faces more challenges Covid-19 said that the number of confirmed cases of new crown pneumonia has decreased in recent weeks, but new cases in some neighboring countries and regions are still growing rapidly. With the increase of global personnel mobility, "external defense input" faces more challenges. The current prevention and control measures are effective for Omicron mutant Wu Liangyou said that from the experience of epidemic prevention and control in China, the current prevention and control measures to deal with the Omicron mutant are effective. The key lies in implementing the "four early" principle and compacting the responsibilities of the four parties. The National Health Commission will guide the areas where the epidemic is occurring, speed up the organization of nucleic acid screening in key areas, strengthen flow investigation, timely standardize the isolation and control of risk personnel, and implement various prevention and control measures to ensure the overall stability of the epidemic situation. Vaccination with inactivated coronavirus vaccine from two manufacturers is not sequential immunization Wang Huaqing, chief expert of immunization planning of China CDC, said that sequential immunization is an alternative strategy adopted by using different technical routes of vaccines, according to a certain interval and times of vaccination, hoping to obtain better preventive effect or further reduce the risk of serious adverse reactions. For example, Wang Huaqing said that most of the vaccines for children's vaccination are the same type of vaccine to complete the whole process of immunization. At present, there are also sequential immunization procedures for children's vaccination. For example, polio vaccine should be vaccinated four times in the whole process, with inactivated vaccine for the first two doses and live attenuated vaccine for the second two doses. People say that the vaccine is "mixed", but the manufacturers are different. They all belong to the vaccine of the same technical route, not sequential immunization. People who have completed booster immunization do not need sequential immunization at present Wang Huaqing said that at present, sequential immunization is based on inactivated vaccine immunization. If two doses of inactivated vaccine are injected in the early stage, and the third dose of inactivated vaccine is injected at an interval of more than 6 months, this situation adopts an enhancement of the same technical route. According to the current regulations, sequential immunization is not required to strengthen. Wang Huaqing, for example, if you have two shots of inactivated vaccine and the third shot of booster vaccine, you should be at least 6 months away from the second shot. In this case, you can choose vaccines of different technical routes for sequential immunization, or you can choose inactivated vaccine, that is, vaccines of the same technical route for booster immunization. (Xinhua News Agency)