The joint prevention and control mechanism of the State Council held a press conference on July 21 to introduce the situation of scientific and accurate epidemic prevention and control, and answer reporters' questions. Mi Feng, spokesman of the National Health Commission and deputy director of the publicity department, said that recently, many places across the country have reported local epidemic outbreaks, there are multiple transmission chains, and the situation of epidemic prevention and control is severe and complex. The comprehensive group of the joint prevention and control mechanism of the State Council has sent working groups to relevant provinces to guide local governments to control the epidemic in the shortest time and at the lowest cost. We should adhere to the "external prevention of input and internal prevention of rebound", adhere to the "dynamic zeroing", strictly implement the ninth edition of the prevention and control plan and the requirements of the "nine prohibitions", do a good job of normalized prevention and control without slackening, take the initiative to prevent, early detection and quick disposal, comprehensively improve the efficiency of the whole chain, and strive to be scientific, accurate and convenient for the masses. Heqinghua, a first-class inspector of the disease control bureau of the National Health Commission, said that since July, the national epidemic has generally been in a low-level fluctuation state. Recently, the epidemic situation in a few areas has rebounded, showing a trend of multi-point distribution and frequent occurrence in many places, and the number of local infected people reported in a single day has increased. In the past week, the epidemic has affected 78 prefectures and cities in 21 provinces, of which 7 provinces have reported more than 100 cases of infection. In general, all regions can effectively control the local epidemic in a relatively short time after the occurrence of the local epidemic, and the impact of the epidemic is relatively limited. The response and disposal capacity and efficiency of the epidemic in all regions have been further improved. "At present, the global epidemic has rebounded, the flow of domestic personnel has increased in the summer, and the risk of local epidemics has increased. The situation of epidemic prevention and control across the country is still grim and complex." He Qinghua said that all regions should adhere to the principles of scientific, accurate and efficient prevention and control, implement various measures of external prevention input throughout the chain, and constantly improve the sensitivity of epidemic monitoring under the condition of normalized prevention and control. After the outbreak of the epidemic, the measures should be firm and decisive, adhere to the principle of controlling the epidemic with speed, strive to control the epidemic in the shortest time and resolutely prevent the occurrence of large-scale epidemic. Recently, Omicron ba 5 has become the main epidemic strain in the world, and Ba has also been detected in some places in China 4 and ba 5. How about its transmissibility and pathogenicity? Dong Xiaoping, chief expert of Virology of the China Center for Disease Control and prevention, ba 4 and ba Compared with other Omicron mutants, the transmissibility of 5 sub branches is slightly increased, and the pathogenicity is generally similar to other Omicron mutants. The existing prevention and control measures in China can still effectively deal with it. "Domestic and foreign experts believe that the current covid-19 vaccination is still effective. Vaccination for the elderly and people with basic diseases, especially booster shots, is still the most effective preventive measure." Dongxiaoping said. "In the face of the sub branches of Omicron mutant ba.4 and ba.5, on the one hand, we should pay attention to its enhanced transmission and severe and critical disease cases caused by large-scale outbreaks, especially high-risk groups. Timely detection and effective control are very important. On the other hand, there is no need to over interpret and panic. The existing vaccine and non drug prevention and control measures are still very effective." Dong Xiaoping said that for the public, the foundation of vaccine should be completed and vaccination should be strengthened as far as possible to avoid serious clinical consequences to the greatest extent. In addition, routine personal protection should be done as always. As of July 20, a total of 3.415.146 million doses of covid-19 vaccine had been vaccinated nationwide, with a total of 1.298 billion people vaccinated, and 1.264.385 billion people have been vaccinated throughout the course. The number of people over 60 years old who were vaccinated reached 236.169 million, and the number of people who completed the whole vaccination was 223.11 million, accounting for 89.45% and 84.5% of the elderly population respectively. (outlook new era)