| 李丹,秦颖,范思萌,彭质斌,葛辉,常昭瑞,张睿,杨孝坤,赵宏婷,郑建东,于石成,王晖,严俊,李中杰.新型冠状病毒感染者航班同乘风险人员排查效果分析[J].Chinese journal of Epidemiology,2023,44(5):713-719 |
| 新型冠状病毒感染者航班同乘风险人员排查效果分析 |
| Performance of screening of contacts of COVID-19 cases in same flight |
| Received:February 28, 2023 |
| DOI：10.3760/cma.j.cn112338-20230228-00112 |
| KeyWord: 新型冠状病毒 阳性检出率 接触者追踪 航班 |
| English Key Word: 2019-nCoV Positive detection rate Contact tracing Flight |
| FundProject:国家重点研发计划(2020YFA0708100);首都卫生发展科研专项(2022-4G-4222);公共卫生应急反应机制运行项目(102393220020010000017) |
| Author Name | Affiliation | E-mail | | Li Dan | Division of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Qin Ying | Division of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Fan Simeng | Division of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Peng Zhibin | Division of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Ge Hui | Information Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Chang Zhaorui | Division of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Zhang Rui | Information Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Yang Xiaokun | Division of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Zhao Hongting | Division of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Zheng Jiandong | Division of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Yu Shicheng | Office for Epidemiology, Chinese Center for Disease Control and Prevention, Beijing 102206, China | | | Wang Hui | National Bureau for Disease Control and Prevention, Beijing 100088, China | | | Yan Jun | Chinese Center for Disease Control and Prevention, Beijing 102206, China | yanjun@chinacdc.cn | | Li Zhongjie | National Bureau for Disease Control and Prevention, Beijing 100088, China
Chinese Center for Disease Control and Prevention, Beijing 102206, China | lizj@chinacdc.cn |
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| Abstract: |
| 目的 分析新型冠状病毒（新冠病毒）感染者航班同乘人员新冠病毒核酸阳性检出情况，为有效确定风险人员排查范围提供依据。方法 回顾性收集我国2020年4月1日至2022年4月30日本土新冠病毒感染者航班同乘人员信息，采用χ2检验分析比较指示病例发病前不同时间、不同座位距离和不同新冠病毒变异株流行期的同乘人员核酸阳性检出率。结果 研究期间，新冠病毒感染者共涉及370架次航班和23 548名同乘人员，累计判定指示病例433名。指示病例的同乘人员中，核酸检测阳性人员72名，其中，与指示病例同行人员57名，非同行人员15名。对15名非同行的阳性同乘人员进一步分析显示，86.67%在指示病例诊断后3 d内发病或检测阳性，乘机时间均在指示病例发病前4 d内，指示病例前后三排内的阳性检出率为0.15%（95%CI：0.08%~0.27%），显著高于前后三排外的阳性检出率［0.04%（95%CI：0.02%~0.10%），P=0.007］，前后三排内各排的阳性检出率差异无统计学意义（P=0.577）。不同类型变异株流行期间，非同行的同乘人员阳性检出率差异无统计学意义（P=0.565）。Omicron变异株流行期中，非同行人员阳性检出集中在指示病例发病前3 d内。结论 指示病例航班同乘人员的风险排查时间可设定为指示病例发病前4 d内。指示病例前后三排内的同乘人员应作为优先排查人员，并作为密切接触者进行管理，座位距离在指示病例前后三排外的同乘人员可作为一般风险人员进行排查和管理。 |
| English Abstract: |
| Objective To understand the performance of 2019-nCoV nucleic acid detection in screening of contacts of COVID-19 cases in same flights and provide evidence for the effective screening of persons at high risk for the infection in domestic flights. Methods The information of passengers who took same domestic flights with COVID-19 cases in China from April 1, 2020 to April 30, 2022 were retrospectively collected,and χ2 test was used to analyze positive nucleic acid detection rates in the passengers in different times before the onsets of the index cases, in different seat rows and in epidemic periods of different 2019-nCoV variants. Results During the study period, a total of 433 index cases were identified among 23 548 passengers in 370 flights. Subsequently, 72 positive cases of 2019-nCoV nucleic acid were detected in the passengers, in whom 57 were accompanying persons of the index cases. Further analysis of the another 15 passengers who tested positive for the nucleic acid showed that 86.67% of them had onsets or positive detections within 3 days after the diagnosis of the index cases, and the boarding times were all within 4 days before the onsets of the index cases. The positive detection rate in the passengers who seated in first three rows before and after the index cases was 0.15% (95%CI: 0.08%-0.27%), significantly higher than in the passengers in other rows (0.04%, 95%CI: 0.02%-0.10%, P=0.007),and there was no significant difference in the positive detection rate among the passengers in each of the 3 rows before and after the index cases (P=0.577). No significant differences were found in the positive detection rate in the passengers, except the accompanying persons, among the epidemics caused by different 2019-nCoV variants (P=0.565). During the Omicron epidemic period, all the positive detections in the passengers, except the accompanying persons, were within 3 days before the onset of the index cases. Conclusions The screening test of 2019-nCoV nucleic acid can be conducted in the passengers took the same flights within 4 days before the onsets of the index cases on board. Passengers who seated within 3 rows from the index cases can considered as the close contacts at high risk for 2019-nCoV, for whom screening should be conducted first and special managements are needed. The passengers in other rows can be classified as general risk persons for screening and management. |
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