陕西省新型冠状病毒肺炎本土病例发病到确诊路径分析

Analysis of the path from discovery of novel coronavirus disease 2019 cases to its diagnosis in Shaanxi Province

目的通过对陕西省本土新冠肺炎病例发现到确诊路径分析,探讨新冠肺炎防控工作中存在的问题与经验。方法收集截至2020年3月26日陕西省新冠肺炎疫情数据及确诊病例的活动轨迹、接触史、密切接触者等重要信息,进行流行病学描述性分析。结果陕西省72.65%(178/245)的新冠肺炎确诊病例在发病时处于未被隔离管理的状态,其造成密接人群的感染率为1.37%;陕西本土新冠肺炎病例发病-确诊延迟时间较长(6.30 d),潜伏期中位时间为7.27 d,疫情前期病例发病-确诊延迟时间(7.29 d)长于疫情后期(6.19 d)。结论根据疫情情势逐步梳理前期工作中存在的漏洞,同时针对新形势下出现的新问题及时评估,不断调整防控策略。

Objective To explore the problems and experience in the prevention and control of novel coronavirus disease 2019(COVID-19)by analyzing the path from its discovery to its diagnosis in Shaanxi Province.Methods We collected the important data of COVID-19 epidemic situation in Shaanxi Province as of March 26,2020,the trajectory of the diagnosed cases,contact history,close contacts and other important information for a descriptive epidemiological analysis.Results Totally 72.65%(178/245)of the confirmed COVID-19 cases in Shaanxi Province were not in isolation or management at the time of onset,which resulted in an infection rate of 1.37%in close-knit populations.The duration between the onset of local COVID-19 cases in Shaanxi and the delay in confirmed diagnosis was relatively long(6.30 days),and the mean incubation period was 7.27 days.The delay time(7.29 days)between onset and diagnosis of preepidemic cases was longer than that(6.19 days)of later epidemic cases.Conclusion According to the epidemic situation,we should gradually sort out the loopholes in previous work and at the same time make timely evaluation of the new problems arising under the new situation and constantly adjust the prevention and control strategies.