Application and analysis of the symptom-based surveillance system for large-scale international sports events during the epidemic period of major infectious diseases
Objective To analyze the running effectiveness of the symptom-based surveillance system among the staff who participated in the service for the Beijing 2022 Winter Olympic and Paralympic Games during the SARS-CoV-2 epidemic,and to provide references for the public health security of large-scale international sports events in future.Methods We collected the data about symptom surveillance cases in the Beijing Winter Olympic and Paralympic Villages and four hotels where the service staff worked and lived during the Beijing 2022 Winter Olympic and Paralympic Games.And the effectiveness and sensitivity of the symptom-based surveillance system were evaluated through the epidemiological analysis of the data.Results Throughout the entire competition,all Olympic-related personnel were under fully enclosed management,and each team had a clear responsibility for symptom monitoring.Combining personal mobile phone reporting with smart bracelet monitoring,a total of 277,600 person-times were cumulatively monitored,77 cases were monitored for symptoms,and there were no infectious disease cases.No clustered outbreaks of infectious diseases were found,and the reporting of symptom surveillance cases was timely.Conclusion Under the severe situation of the spread of SARS-CoV-2 infection,the symptom-based surveillance system for the service staff of the Beijing 2022 Winter Olympic and Paralympic Games ran effectively.Each team's experiences like labor-division and team collaboration,clear responsibilities,fully enclosed management and use of the new technologies can provide references for similar public health security in future.
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