云南省陇川县1 起新型冠状病毒肺炎学校聚集性疫情调查分析  

Epidemiological investigation on a cluster epidemic of COVID-19 in a school in Longchuan County,Yunnan Province

作　　者：韩继周 何志群[2] 许所菊 高右东 杨跃诚 董朝良 李艳玲 李林 姚仕堂 HAN Jizhou;HE Zhiqun;XU Suoju;GAO Youdong;YANG Yuecheng;DONG Chaoliang;LI Yanling;LI Lin;YAO Shitang(Dehong Prefecture Center for Disease Control and Prevention,Mangshi,Yunnan 678400,China;Dehong Prefecture Longchuan County Center for Disease Control and Prevention,Mangshi,Yunnan 678700,China)

机构地区：[1]云南省德宏傣族景颇族自治州疾病预防控制中心,云南芒市678400 [2]云南省德宏傣族景颇族自治州陇川县疾病预防控制中心,云南芒市678700

出　　处：《上海预防医学》2022年第9期884-887,共4页Shanghai Journal of Preventive Medicine

摘　　要：【目的】对云南省陇川县1起新型冠状病毒肺炎学校聚集性疫情展开调查分析,为提高边境疫情防控提供有力依据。【方法】根据《新型冠状病毒肺炎疫情防控方案(第8版)》,对所有新型冠状病毒肺炎感染病例进行流行病学调查,收集病例基本信息、发病就诊经过、转归情况、流行病学史等,追踪密切接触者,并分析其传播链。【结果】本起学校聚集性疫情共发现37例病例,其中学生35例,老师2例;年龄最小13岁,最大25岁;女性32例,男性5例。学生病例分布在2个年级4个班级。基因测序结果显示均为Delta株变异株,属于同一传播链,与以往德宏州内发生的疫情均无关联。排查出的2127名密切接触者经过21 d的集中隔离医学观察后,核酸检测结果均为阴性。除1例病例核酸结果一直未转阴外,其余36例均已治愈出院。【结论】由于抵边村寨村民接触了被污染的河水引发了此起学校聚集性疫情,校方下一步须严格管理抵边村寨带入的学生物品,杜绝类似疫情再次发生。[Objective]To investigate a cluster epidemic of coronavirus disease 2019(COVID-19)infections in a school in Longchuan County,Yunnan Province,and further guide the prevention and control of COVID-19 in the border area.[Methods]According to the Protocol on Prevention and Control of Novel Coronavirus Pneumonia(8th Edition),an epidemiological investigation was performed on all COVID-19 cases to collect the information on demographics,onset,diagnosis and treatment,prognosis,and epidemiological history.Close contacts were also tracked to determine the transmission chains.[Results]In this cluster epidemic,a total of 37 COVID-19 cases were identified,including 32 females and 5 males aged from 13 to 25 years,who were 35 students and 2 teachers.The student cases were found in four classes of two grades.Furthermore,gene sequencing showed that all cases had been infected with delta variants,belonging to the same transmission chain that was not related to the previous epidemics in Dehong Prefecture.In additionally,a total of 2127 close contacts were found.After 21 days of centralized quarantine for medical observation,all close contacts tested negative for SARS-CoV-2.In the COVID-19 cases,only one case remained positive for SARS-CoV-2,while the other 36 cases were successfully treated and became negative.[Conclusion]This school cluster is caused by the border villagers who contacted the water polluted with SARS-CoV-2.It warrants more strict management of students from border villages and their belongings to prevent similar epidemics in school settings.

关 键 词：新型冠状病毒肺炎 学校 聚集性疫情 云南省 

分 类 号：R183.3[医药卫生—流行病学]