At present, novel coronavirus pneumonia is still in the pandemic stage, and the number of local confirmed cases and asymptomatic infections is increasing rapidly. What is the epidemic situation in China? How to do a good job in epidemic prevention and control strictly and practically? What should we pay attention to during the Qingming holiday? The joint prevention and control mechanism of the State Council held a press conference on April 1 to respond to hot issues of epidemic prevention. The epidemic spread to 29 provinces According to MI Feng, spokesman of the National Health Commission, the recent epidemic has spread in many places, and the scope of the epidemic has further expanded. The community transmission in some areas has not been blocked, and there are reports of spillover cases. The situation of prevention and control is grim and complex. Lei Zhenglong, deputy director of the disease control bureau of the National Health Commission, introduced that from March 1 to 31, more than 100000 local infections were reported nationwide, affecting 29 provinces, showing the characteristics of many points, wide range and frequent occurrence. According to reports, at present, the epidemic situation in Jilin Province is still in the development stage, with a total of more than 44000 cases of infection reported. Community communication within the control areas of Jilin and Changchun has not been blocked; The epidemic situation in Shanghai is rising rapidly, with more than 36000 cases of infection reported. Adhere to the general policy of "dynamic clearing" Omicron variant virus has strong infectivity, fast transmission speed, and a certain proportion of asymptomatic infections, which has brought new difficulties to epidemic prevention and control. Wu Zunyou, chief epidemiologist of the China CDC, said that the new characteristics of the Omicron variant require us to have a more sensitive monitoring system in order to detect the epidemic earlier and implement various prevention and control measures faster. In view of the challenge of finding asymptomatic infected people, Wu Zunyou said that through big data to assist epidemiological investigation, clarify the transmission chain, track close contacts and find asymptomatic infected people on the transmission chain. In addition, the monitoring line of defense will be further moved forward. Through the monitoring mode of "antigen screening + nucleic acid diagnosis", asymptomatic infected persons will be found as soon as possible and the transmission chain will be cut off. "According to the data released by some foreign countries, the number of deaths caused by Omicron virus during the epidemic period is higher than that caused by delta virus during the same period. This shows that the epidemic of Omicron virus is still very serious to a country or region." Wu Zunyou said that novel coronavirus pneumonia is still the most effective and effective control strategy for controlling the new crown pneumonia epidemic. Mi Feng stressed the need to speed up the investigation of regional co investigators and risk personnel, do differentiated and accurate prevention and control at different levels, and curb the spread of the epidemic as soon as possible. We should ensure that people's production and life are stable and orderly, and ensure people's medical needs through multiple channels and ways. Strictly implement epidemic prevention and control measures and advocate civilized and low-carbon sweeping methods Qingming Festival is coming. What are the precautions for the holiday? "Outing outing outing, we must pay attention to the implementation of personal protective measures to reduce the risk of infection with COVID-19." Wu Zunyou said that it is not recommended to travel across provinces. For places where there is no epidemic, the best way to travel is self driving. "All localities should continue to strictly implement epidemic prevention and control measures and advocate civilized and low-carbon sweeping methods." Lei Zhenglong said that we are encouraged to take more appropriate outdoor activities, breathe fresh air and maintain a happy mood. However, we should also pay attention to not gathering indoors, wearing masks, more ventilation and washing hands frequently. We should work together to prevent epidemic and maintain health. For individuals, vaccination with COVID-19 is still the best way to prevent severe and death after infection. Wang Huaqing, chief expert of immunization program at China CDC, said that the whole process of vaccination with COVID-19 vaccine could reduce the risk of severe and death by more than 90%. Wang Huaqing suggested that the elderly over 60 who meet the vaccination conditions should be vaccinated as soon as possible and vaccinated with booster shots at specified intervals. (Xinhua News Agency)