甘肃省流行性乙型脑炎地区分布特征分析

Distribution features of Japanese encephalitis B in Gansu Province.

目的分析甘肃省1990～2008年流行性乙型脑炎(乙脑)的地区分布特征,为控制乙脑提供依据。方法运用描述流行病学方法,利用甘肃省疾病预防控制中心(CDC)历年疫情资料汇编和法定传染病报告系统资料,分析1990～2008年甘肃省乙脑地区分布特征。结果 1990～2008年,兰州及以西的6个市无病例,天水、陇南、平凉3市,是甘肃省乙脑发病最高的市,近19年年均发病率>1/10万,在14个市州乙脑发病率排序中一直位居前3位,每年乙脑病例数占全省乙脑病例总数95%左右。结论甘肃省乙脑病例主要集中在东南部地区,兰州以西无乙脑病例报告,天水、陇南、平凉3市是甘肃省的主要疫区。

Aim To analyze regional distribution features of Japanese encephalitis（JE） B in Gansu Province. Methods Description epidemiological method was used to analyze the epidemic situation of JE B in Gansu. Results There were no JE B cases in Lanzhou and the western part to Lanzhou. About 95% of cases in the areas of Tianshui ,I.ongnan,and Pingliang. The incidence of JE B in the last 19 yaers were less than 1/100 000 population. Conclusion Most of the cases were in the south-eastern areas of Gansu Province.