Spatial association analysis on epidemic of SARS in Beijing, 2003
2003年北京市SARS疫情空间相关性分析

Exploratory spatial data analysis (ESDA), newly emerged technique with application of information technology, especially with geographical information system (GIS), can be used in studying objects with spatial reference to effectively perceive and interpret the relationship among them. Sudden breakout and spread of SARS caused a disaster in regional development. It is important to effectively perceive the spatial process and association of SARS for decision making on prevention of SARS. With published data of SARS of Beijing in 2003, spatial process of it had been analyzed. The results indicated that there were two turning points in spatial distribution of SARS. One was the diffusion trend with panic in population; the other was the random outbreak cases trend with effective measures taken. Further more, the trends were also proved with hotspots detecting method used in newly possible cases, as well as random hotspots distribution of SARS cases in loop two and correlated distribution with population and flow of people.