Ben-Jiao H U, Zheng-Yuan Z, Meng X, Guang-Ping L I, Guang-Hui R, Qing-Wu J, Yi-Biao Z
Hunan Institute of Parasitic Diseases, WHO Collaborating Centre for Research and Control on Schistosomiasis in Lake Region, Yueyang 414000, China; School of Public Health, Fudan University, China.
Hunan Institute of Parasitic Diseases, WHO Collaborating Centre for Research and Control on Schistosomiasis in Lake Region, Yueyang 414000, China.
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi. 2017 Jul 24;29(4):406-411. doi: 10.16250/j.32.1374.2016127.
To explore the spatial-temporal characteristics and changing regularities of infections among human from 2004 to 2011. The township level spatial databases of schistosomiasis in Hunan Province from 2004 to 2011 were established, and the related spatial analysis was performed by SPSS 17.0, ArcGIS 10.1 and SaTScan 7.03. The schistosome infection rate among human in Hunan Province sharply decreased from 3.0% in 2004 to 0.8% in 2011. However, the rate among residents in parts of some townships in 2011 was still hovering at a higher level ( = 2.12%), and the higher rate was distributed along the snail ridden areas outside embankment. The autocorrelation analysis showed that the global Moran's for schistosome infection rate among human was 0.34 to 0.53 from 2004 to 2011, and was higher than the expected value ( > 8.71, < 0.05). The local G statistics indicated that the positive hotspot high-high clustering areas were mainly near the coast of Dongting Lake from 2004 to 2011, and the number of townships with schistosomiasis endemic in the clustering areas reached 30 to 70. The spatial scan analysis showed that the number of townships in the clustering areas ran up to 145 to 183 from 2004 to 2011. The schistosome infection rate among human decreased significantly in Hunan Province from 2004 to 2011. However, the rate in parts of some townships still remains at a comparatively high level, and there are positive spatial correlation and spatial agglomerations in the schistosome infection rate among human, suggesting that the prevention and control work on schistosomiasis in these areas should be strengthened in the future.
为探究2004年至2011年期间人类感染的时空特征及变化规律。建立了湖南省2004年至2011年乡镇级血吸虫病空间数据库，并运用SPSS 17.0、ArcGIS 10.1和SaTScan 7.03进行相关空间分析。湖南省人群血吸虫感染率从2004年的3.0%急剧下降至2011年的0.8%。然而，2011年部分乡镇居民的感染率仍徘徊在较高水平（=2.12%），且较高感染率分布在堤外滩有螺区域。自相关分析表明，2004年至2011年人群血吸虫感染率的全局莫兰指数为0.34至0.53，高于预期值（>8.71，<0.05）。局部G统计量表明，2004年至2011年阳性热点高高聚集区主要在洞庭湖沿岸附近，聚集区内血吸虫病流行乡镇数量达30至70个。空间扫描分析表明，2004年至2011年聚集区内乡镇数量达145至183个。2004年至2011年湖南省人群血吸虫感染率显著下降。然而，部分乡镇的感染率仍处于较高水平，且人群血吸虫感染率存在正空间相关性和空间集聚现象，提示未来应加强这些地区的血吸虫病防控工作。
