1990～2018年沈阳市流行性乙型脑炎流行特征分析

Analysis on epidemiological characteristics of Japanese encephalitis,Shenyang city,1990-2018

目的了解沈阳市乙脑流行特点及趋势,为防制乙脑提供科学依据。方法采用描述流行病学方法对沈阳市1990~2018年乙脑疫情资料进行分析。结果 1990~2018年沈阳市共报告乙脑病例86例,死亡8例,病死率为9.30%。2002~2017年无病例报告,2018年报告5例本地原发病例。发病季节性明显,9月为发病高峰(48例、55.81%);各县(市)区均有病例报告。15岁及以上为主要发病人群(70.93%)。成人发病有增多趋势(P<0.05)。结论秋季为沈阳市乙脑发病高峰季节,成人为主要发病人群。

Objective To understand the epidemiological characteristics and trend of Japanese encephalitis (JE) in Shenyang city,so as to provide scientific basis for its prevention and treatment. Methods Descriptive epidemiological method was used to analyze the data of JE in Shenyang city during 1990-2018. Results During 1990-2018,86 cases of JE were reported in Shenyang city, including 8 deaths,and the average annual fatality rate was 9. 30%. No case was reported during 2002-2017,5 local cases were reported in 2018. There was obvious seasonality of JE, peaked in September (48 cases, 55. 81 %);cases were reported in all districts. Cases concentrated in the age of 15 and above (70. 93%). There was an increasing trend in adults( P<0. 05). Conclusion Autumn is the peak of JE in Shenyang city. Adults is the main group of patients.