辽宁省丹东地区肺吸虫病流行现状分析

为了解丹东地区肺吸虫宿主感染情况和人群肺吸虫病感染率、患病率的动态变化 ,探讨肺吸虫病发病规律和流行特点 ,采用回顾性调查方法 ,对 196 3～ 1998年丹东地区肺吸虫病流行和防治资料进行分析。结果显示 ,宿主川卷螺感染率由 196 4年的 2 .2 0‰下降至 1993年的 0 .6 7‰ ,1994年后螺密度锐减 ,很难采集到。 196 4年东北喇蛄感染率均在 6 0 %以上 ,感染度无明显变化 ,1996年后疫河中喇蛄几乎绝迹。家犬感染率在 44 .11%左右 ,剖检家犬阳性率在 84%以上 ,平均每犬得虫数为 34.85只。人群肺吸虫病感染率由 1991年的 2 3.36 %下降至 1998年的15 .2 4%。肺吸虫病发病率由 196 3年的 12 .9%下降至 1991年的 0 .4%。 1998年暴发流行传入性肺吸虫病 ,发病率92 .2 %。因此 ,丹东地区卫氏肺吸虫病基本控制。但传入性肺吸虫病尚难以控制。今后防治工作应在严密监测加强宣教的同时 ,加强境外河蟹的检疫及监测传入性肺吸虫病的疫情变化 ,防止其发生和流行

PRESENT ENDEMIC STATUS OF PARAGONIMIASIS IN DANDONG CITY, LIAONING PROVINCE, CHINA

Based on the epidemiological data ofparagonimiasis in Dandong City from 1963 to 1998, we analyzed the present endemic statusof paragonimiasis in Dandong City. The results showed that (1)the infective rate ofSemisulcospira sp. snails decreased from 2.20‰ in 1964 to 0.67‰ in 1993；(2)theinfective rate of melacercaria in A. dauricus was above 60% and its infective degree doesnot change;(3) the infective rate of dogs was 44.11%, 80% of dogs was found that theaverage infected number of paragonimus in one dog was 34.85; (4) the infective rate ofhuman decreased from 23.36% in 1991 to 15.24% in 1998; (5) the incidence of importedparagonimiasis was 92.2% in 1998. It is suggested that the paragonimiasis had beeneffectively controlled in Dandong City, but it is difficulty to control immportedparagonimiasis.