论文部分内容阅读
目的应用地理信息系统(GIS)分析云南省大理市血吸虫病流行状况及钉螺分布情况。方法收集云南大理市2002～2008年血吸虫病疫情资料,并输入计算机建立GIS数据库,用ArcGIS 9.2软件对7年来大理市的血吸虫病流行状况、钉螺和急性血吸虫感染(急感)分布变化进行描述和分析。结果2008年血吸虫病流行于11个乡(镇)、91个行政村、401个自然村。2008年趋势面分析显示钉螺分布有向西北方向聚集的趋势,而人群感染则向东南聚集。急感病例分布于6个乡(镇),23个行政村;时空聚类分析显示病例分布呈现明显的聚集性。2002年大理市喜州镇的3个流行村为一级聚类区。结论GIS作为数据库和图形管理的工具,能更直观、形象和宏观地描述、分析血吸虫病疫情。
Objective To analyze the epidemic situation of schistosomiasis and distribution of Oncomelania snails in Dali, Yunnan Province by using geographic information system (GIS). Methods The epidemic data of schistosomiasis from 2002 to 2008 in Dali, Yunnan Province were collected and imported into a computer to build a GIS database. ArcGIS 9.2 software was used to describe the prevalence of schistosomiasis and the distribution of schistosomiasis infection (acute infection) in Dali during the past seven years analysis. Results Schistosomiasis was endemic to 11 townships (towns), 91 administrative villages and 401 natural villages in 2008. The trend surface analysis in 2008 showed that the snail distribution tends to gather northwest, while the population infected to the southeast. The cases of acute illness were distributed in 6 townships (towns) and 23 administrative villages. Spatial-temporal cluster analysis showed that the distribution of cases showed obvious aggregation. In 2002, three popular villages in Xizhou, Dali City were clustered. Conclusion As a tool of database and graphic management, GIS can describe and analyze the epidemic situation of schistosomiasis more intuitively, vividly and macroscopically.