周宁县肾综合征出血热控制效果观察

Observation on the Effectiveness of HFRS-Control in Zhouning County

本文报告了自1991年以来对周宁县肾综合征出血热（HFRS）开展控制的效果研究。通过历年监测资料综合分析，证实了黑线姬鼠、褐家鼠和黄毛鼠是周宁县HFRS的主要宿主动物和传染源，疫区类型属姬鼠为主的混合型疫源地。自1991年以来每年坚持在春秋季节进行两次大规模的以灭野鼠为主，并灭家鼠的防制措施，使鼠密度、带病毒鼠指数大幅度下降，人群发病率比灭灵前18年年均下降54．16％，比灭鼠前5年下降67．37％。监测发现，随着灭鼠工作的深入开展，鼠种构成及带病毒状况发生变化，近年来野外针毛鼠、黑线姬鼠构成明显下降，带病毒率减少，黄毛鼠构成相对上升。

This paper reported the results of HFRS-control in Zhouning County since 1991. The results showed that Apodemus agrarius, Rattus norvegicus and Rattus losea were the main hosts and infection sources of HFRS. And epidemic areas were mixed. Since 1991, killing wild and domestic rats were carried out every year in spring and autumn.The density of rats and index of carrying virus showed a descending trend.The incidence of population was descended to 54.16% and 67.37%. The surveillance results showed that the percentages of Apodemus agrarius and Rattus fulvecens and their carrving rates of virus descended significantly but Rattus losea increased relatively. The population incidence was decreased continually.