China News Service, Beijing, January 6 (Reporter Chen Hang) Pang Xinghuo, deputy director of the Beijing Center for Disease Control and Prevention and member of the National Expert Group on New Coronavirus Infection, said at a press conference on the epidemic prevention and control work on the 6th that Beijing is In the monitoring of mutant strains in the social population, the prevalence of mutant strains such as XBB and BQ.1 has not been found yet. At this stage, the prevailing strains in the society are still dominated by BF.7 and BA.5.2, a sub-branch of BA.5. strain.

  Pang Xinghuo said that in order to dynamically grasp the level of new coronavirus infection and its changing trend among the "Class B and B tube" population, Beijing specially formulated the "Beijing Novel Coronavirus Infection Monitoring and Early Warning Work Plan" to build a multi-dimensional comprehensive monitoring and early warning system.

  The first is nucleic acid and antigen detection and monitoring for citizens.

Daily collection and summary of voluntary nucleic acid and antigen testing of residents, nucleic acid screening and testing of people in key industries and key institutions, and nucleic acid testing of medical personnel in medical institutions, etc., to dynamically analyze and judge infection levels and trends.

  The second is the monitoring of new coronavirus infection cases in medical institutions.

In the existing sentinel monitoring medical institutions of new coronavirus infection cases, daily collection and detection of the number of outpatient (emergency) clinic visits, the number of people with acute fever and respiratory symptoms, the total number of admitted cases, the number of severe acute respiratory infection cases, and the number of new coronavirus nucleic acid or antigen The number of people, the number of people who tested positive, etc. were monitored for dynamic analysis.

  The third is community infection level monitoring.

Randomly select community (village) residents in the city, carry out a survey on the infection level of community (village) personnel among all family members, and dynamically carry out an online questionnaire survey on residents' infection status to dynamically understand the progress of the city's epidemic situation.

  The fourth is nucleic acid testing and monitoring of entry personnel.

Carry out infection rate and mutant strain monitoring on entry personnel, and dynamically grasp the infection level and virus mutation of the entry personnel.

  The fifth is the pathogenic monitoring of the new coronavirus.

Relying on networks such as sentinel hospitals, clusters and outbreak monitoring, carry out monitoring of the positive rate of the new coronavirus and the composition of mutant strains, dynamically analyze the infection level of the city's population and changes in virus strains, timely discover new local mutants, and track them dynamically Potentially important variants.

  Sixth, other related monitoring.

Carry out data monitoring of key institutions, key populations, sewage, and population flow, and systematically collect data on the entire chain of new coronavirus infection to provide a comprehensive data basis for early warning response.

  Pang Xinghuo said that through the above-mentioned multi-channel and multi-source comprehensive monitoring, real-time monitoring of the mutation of the new crown virus, the development trend of the epidemic and the extent of its spread will provide a scientific basis for formulating and implementing corresponding social prevention and control measures to effectively respond to the epidemic and protect the lives of the people. and good health.