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  • Title: [Study on spatial - temporal characteristics of Schistosoma japonicum infections among human in Hunan Province, 2004-2011].
    Author: Ben-Jiao HU, Zheng-Yuan Z, Meng X, Guang-Ping LI, Guang-Hui R, Qing-Wu J, Yi-Biao Z.
    Journal: Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi; 2017 Jul 24; 29(4):406-411. PubMed ID: 29508569.
    Abstract:
    Objective To explore the spatial-temporal characteristics and changing regularities of Schistosoma japonicum infections among human from 2004 to 2011. Methods 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. Results 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 (P90 = 2.12%), and the higher rate was distributed along the Oncomelania hupensis snail ridden areas outside embankment. The autocorrelation analysis showed that the global Moran's I for schistosome infection rate among human was 0.34 to 0.53 from 2004 to 2011, and was higher than the expected value (Z > 8.71, P < 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. Conclusions 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. ［摘要］目的 探索2004–2011年湖南省居民血吸虫感染的时空特征和变化规律。方法 基于2004–2011年湖南省乡 (镇)血吸虫病病情数据库, 对湖南省居民血吸虫感染的时空特征进行描述与分析。结果 2004–2011年湖南省居民血吸虫感染率由3.0%下降至0.8%, 但部分乡 (镇)居民血吸虫感染率仍处于较高水平 (P90 = 2.1%), 有螺水系沿岸居民血吸虫感染率高于其他地区。全局自相关分析显示, 2004–2011年湖南省居民血吸虫感染率Moran’s I指数为0.34~0.53, 均高于期望值且具有统计学意义 (Z > 8.71, P < 0.05); 局部G统计量热点分析显示, 2004–2011年正热点“高-高”聚集乡 (镇)主要位于洞庭湖沿岸, 聚集乡 (镇)数量为30~70个。SaTScan空间扫描发现, 2004–2011年聚集区域内血吸虫病流行乡 (镇)数为145~183个。结论 2004–2011年湖南省居民血吸虫感染率下降明显, 但部分乡 (镇)居民血吸虫感染率仍处于较高水平。2004–2011年湖南省居民血吸虫感染率存在明显正向空间自相关和聚集性, 正热点“高-高”聚集区域可确定为下一步血吸虫病防治工作的重点。 ［关键词］血吸虫病; 时空分布; 空间自相关; 扫描统计; 湖南省.
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