2017年浙江省杭州市拱墅区登革热暴发疫情调查分析

祝绯飞; 袁寒艳; 王芝敏; 张晨烨

doi:10.3784/j.issn.1003-9961.2019.05.012

2017年浙江省杭州市拱墅区登革热暴发疫情调查分析

An outbreak of dengue fever in Gongshu district of Hangzhou, Zhejiang, 2017

摘要

摘要:
目的调查2017年浙江省杭州市拱墅区登革热暴发疫情情况及原因，为今后开展登革热防控工作提供参考和依据。
方法通过对社区、医院进行主动搜索，对2017年杭州市拱墅区登革热病例进行流行病学个案调查，掌握病例的临床表现、流行病学资料，并对疫情暴发原因进行分析。
结果本次疫情共报告登革热病例327例，发病高峰为8月21日至9月15日，病例主要集中分布在运河沿线的4个街道，以＞50岁人员为主，占全部病例的61.16%，职业以离退人员（123例，占37.61%）及家务及待业（76例，占23.24%）为主。病例发病到诊断时间间隔平均为5.20 d，其中住院病例为3 d（2 ~ 5 d），非住院病例为5 d（3 ~ 7 d），两者差异有统计学意义（Ζ＝6.383，P＜0.001）。
结论本次暴发疫情可能是由登革热输入病例或隐性感染者引起的本地传播，建议加强医疗机构登革热诊断水平，提高登革热监测敏感性，长效运行登革热“网格区域责任制”，确保及早发现和控制疫情。

Abstract:
ObjectiveTo understand the cause of an outbreak of dengue fever occurred in Gongshu district of Hangzhu, Zhejiang province, in 2017, and provide evidence for the prevention and control of dengue fever in the future.
MethodsEpidemiological survey was conducted through active search of dengue fever cases in hospitals and communities to describe the epidemiological characteristics of the cases and analyze the cause of the outbreak.
ResultsA total of 327 cases were reported in this outbreak, most cases occurred from 21 August to 15 September and distributed in 4 communities along with the Beijing-Hangzhou Grand Canal. The cases were mainly the retired (123, 37.61%) and the jobless (76, 23.24%) and aged ＞50 years (61.16%). The average interval between onset and diagnosis was 5.20 days, and the interval was 3 days (2–5 d) in inpatient group and 5 days (3–7 d) in outpatient group, the difference was significant (Ζ＝6.383, P＜0.001).
ConclusionThis outbreak, a local transmission of dengue fever, might be caused by imported or latent infection cases. It is suggested to improve the diagnosis and surveillance of dengue fever in hospitals at all levels and implement community responsibility protocol regularly for the timely detection and control of dengue fever epidemic in the future.

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