中文摘要：

目的探测2008年湖区5省血吸虫病传播的聚集区域,为血吸虫病防治工作提供依据,同时也为相关疾病聚集区域探测方法提供参考。方法基于县级GIS构建空间数据库,同时收集现有病人数、流行县人口数等资料,运用SaTScan软件探测血吸虫病聚集区域。结果共探测出5个聚集区域,包括39个县（区）。其中有3个聚集区域的相对危险度均达到了3以上,对数似然比均在1 000以上（P〈0.05）。位于长江与湖北、湖南交界段的聚集区域聚集范围最大,相对危险度和对数似然比最高;从此处开始向长江下游方向聚集范围逐渐缩小,相对危险度也逐渐降低。结论湖区5省沿江地区仍是血吸虫病空间聚集的主要区域,尤以湖北、湖南交界地带空间聚集性最高、范围最大。

英文摘要：

Objective To detect the schistosomiasis clusters in marshland and lake areas in 2008,so as to provide the reference for schistosomiasis control and the methodology for detection of cluster areas of related diseases.Methods SaTScan was used to detect the schistosomiasis clusters based on the spatial database from GIS and related variables,including the number of current patients and population in endemic areas.Results A total of 5 clusters including 39 counties（districts） were detected by SaTScan,the RRs and the Log-likelihood ratios of 3 clusters among them were over 3 and 1 000（P〈0.05）,respectively.The one with the highest RR and Log-likelihood ratio was located in the boundary of Hubei and Hunan provinces,and the cluster range there was the biggest.From there to the downstream of the Yangtze River,the area and RRs of the 5 clusters became smaller and smaller.Conclusion The 5 provinces in the marshland and lake areas are still the key spatial clusters of schistosomiasis,especially near the boundary of Hubei