2011—2015年本溪市肾综合征出血热监测及流行特征

Surveillance and epidemic characteristics of hemorrhagic fever with renal syndrome in Benxi City from 2011-2015

目的通过分析2011—2015年监测资料,描述近几年本溪肾综合征出血热(hemorrhagic fever with renal syndrome,HFRS)流行特征和变化趋势。方法采用描述流行病学方法对监测数据进行统计分析。结果 2011—2015年本溪市共报告HFRS病例293例,死亡3例,平均发病率为3.42/10万,平均病死率为1.02%。发病主要集中在明山区和本溪县,每年各月份均有报告病例,明显呈春季(3—5月)和秋冬季(11月至次年1月)两个高峰,发病以男性青壮年农民为主,其中30~50岁年龄组病例最多,健康人群隐性感染率30岁年龄组感染率最高。鼠带病毒指数与人群发病率呈正相关(r=0.891,P=0.043)。结论 HFRS在本溪市仍是有一定病死率、发病数较多的自然疫源性疾病,暴发和流行的隐患依然存在。

[Objective]To describe the epidemic characteristics and trend of hemorrhagic fever with renal syndrome（HFRS）in Benxi City by analyzing the surveillance data from 2011-2015. [Methods] Descriptive epidemiological method was used to analyze the surveillance data. [Results]A total of 293 HFRS）cases were reported in Benxi City 2011-2015,including 3 death cases,and the average motbidity and fatality rate was 3.42/lakh and 1.02% respectively. The cases mainly concentrated in Mingshan District and Benxi County. The cases were reported in every months of the years,and there were two obvious peaks in the spring（March-May）and autumn and winter（November to January of the next year）. Most of patients were male farmers who were young and middle-aged,which case number in 30-50 year-old age group was the highest. The occult infection rate was the highest in healthy people of 30-year-old age group. Virus rat index was positively correlated with the incidence of population（r=0.891,P =0.043）. [Conclusion]HFRS is still a natural focus disease with a certain mortality rate and higher incidence rate,while outbreaks and epidemic risks still exist.