漳州市首起海上输入新型冠状病毒感染聚集性疫情调查分析  

Investigation of the first cluster of COVID-19 imported from the sea in Zhangzhou,China

作　　者：许志斌[1] 陈丹红[1] 郑惠婷 吴月娇[1] 蔡少健[2] 祝寒松[2] XU Zhi-bin;CHEN Dan-hong;ZHENG Hui-ting;WU Yue-jiao;CAI Shao-jian;ZHU Han-song(Zhangzhou City Center for Disease Control and Prevention,Zhangzhou 363005,China;Fujian Provincial Center for Disease Control and Prevention)

机构地区：[1]漳州市疾病预防控制中心,漳州363005 [2]福建省疾病预防控制中心

出　　处：《环境卫生学杂志》2023年第5期328-332,共5页JOURNAL OF ENVIRONMENTAL HYGIENE

摘　　要：目的分析2022年6月漳州市首起海上输入新型冠状病毒感染(COVID-19)聚集性疫情,为优化疫情防控措施提供参考。方法运用现场流行病学方法对病例进行活动轨迹调查、密切接触者判定与追踪,涉疫场所判定以及人员、环境采样检测,对阳性标本进行基因测序分析。结果6月5日在“应检尽检”工作中发现1名从事海鲜运输的货车司机新冠病毒核酸检测结果呈阳性,溯源调查其感染来源为装货过程接触的与境外人员交易传染的5名中国内地船员。本起疫情共发现13例新冠病毒感染者,其中男性11例,女性2例;年龄40~60岁,平均年龄50岁;分布在3代,平均代际传播时间3 d。涉疫货车、渔船和货车司机住所环境标本核酸阳性;基因测序13名阳性感染者毒株类型均为Omicron变异株(BA.2.3),与同期从台湾地区进入厦门病例高度同源。结论本起疫情为船员在海上接触境外人员引起的输入性聚集性疫情,提示COVID-19疫情期间船员、渔民在海上接触境外船舶、人员是输入性疫情风险点,需要予以重视。Objective To analyze the first cluster of coronavirus disease 2019(COVID-19)imported from the sea in Zhangzhou,China in June 2022,and provide a reference for optimizing the epidemic prevention and control measures.Methods Field epidemiological methods were used to investigate the activity trajectory of cases,identify and trace the close contacts,identify the sites involved in the epidemic,and conduct personnel and environmental sampling and testing.Positive samples were analyzed by gene sequencing.Results On June 5,2022,a truck driver engaged in seafood transportation was found to be positive for COVID-19 nucleic acid in the“All Those in Need Are Tested”work.The source of infection was traced to the contact with five Chinese mainland crew members during the loading process who were infected by trading with overseas personnel.A total of 13 cases of COVID-19 were determined in this outbreak,including 11 males and 2 females;the age ranged from 40 to 60 years,with an average age of 50 years;viruses were transmitted in three generations,with an average intergenerational transmission time of 3 d.The environmental samples of the truck,fishing boat,and truck driver’s residence were positive for COVID-19 nucleic acid.Gene sequencing showed that the variant type in the 13 positive infected persons was Omicron variant(BA.2.3),which was highly homologous with that in the cases entering Xiamen from Taiwan region,China during the same period.Conclusion This outbreak is an imported cluster epidemic caused by crew members’contact with overseas personnel at sea,suggesting that the contact of crew members and fishermen with overseas ships and personnel at sea should be lessened during the COVID-19 epidemic,and nucleic acid screening and health management should be strictly implemented for personnel returning to the port to prevent and control the import of the epidemic from the sea.

关 键 词：新型冠状病毒感染(COVID-19) 流行病学 聚集性疫情 感染来源 

分 类 号：R183.3[医药卫生—流行病学]