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Changing Patterns of Spatial Clustering of Schistosomiasis in Southwest China between 1999–2001 and 2007–2008: Assessing Progress toward Eradication after the World Bank Loan Project

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  • Yi Hu

    (Department of Epidemiology and Biostatistics, School of Public Health, Fudan University, Shanghai 200032, China
    Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
    Laboratory for Spatial Analysis and Modeling, School of Public Health, Fudan University, Shanghai 200032, China
    These authors contributed equally to this work.)

  • Chenglong Xiong

    (Department of Microbiology and health, School of Public Health, Fudan University, Shanghai 200032, China
    These authors contributed equally to this work.)

  • Zhijie Zhang

    (Department of Epidemiology and Biostatistics, School of Public Health, Fudan University, Shanghai 200032, China
    Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
    Laboratory for Spatial Analysis and Modeling, School of Public Health, Fudan University, Shanghai 200032, China)

  • Can Luo

    (Department of Environmental Art and Architecture, Changsha Environmental Protection Vocational Technical College, Hunan 410004, China)

  • Ted Cohen

    (Division of Global Health Equity, Brigham and Women's Hospital & Department of Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA)

  • Jie Gao

    (Department of Epidemiology and Biostatistics, School of Public Health, Fudan University, Shanghai 200032, China
    Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
    Laboratory for Spatial Analysis and Modeling, School of Public Health, Fudan University, Shanghai 200032, China)

  • Lijuan Zhang

    (National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China)

  • Qingwu Jiang

    (Department of Epidemiology and Biostatistics, School of Public Health, Fudan University, Shanghai 200032, China
    Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
    Laboratory for Spatial Analysis and Modeling, School of Public Health, Fudan University, Shanghai 200032, China)

Abstract

We compared changes in the spatial clustering of schistosomiasis in Southwest China at the conclusion of and six years following the end of the World Bank Loan Project (WBLP), the control strategy of which was focused on the large-scale use of chemotherapy. Parasitological data were obtained through standardized surveys conducted in 1999–2001 and again in 2007–2008. Two alternate spatial cluster methods were used to identify spatial clusters of cases: Anselin’s Local Moran’s I test and Kulldorff’s spatial scan statistic. Substantial reductions in the burden of schistosomiasis were found after the end of the WBLP, but the spatial extent of schistosomiasis was not reduced across the study area. Spatial clusters continued to occur in three regions: Chengdu Plain, Yangtze River Valley, and Lancang River Valley during the two periods, and regularly involved five counties. These findings suggest that despite impressive reductions in burden, the hilly and mountainous regions of Southwest China remain at risk of schistosome re-emergence. Our results help to highlight specific locations where integrated control programs can focus to speed the elimination of schistosomiasis in China.

Suggested Citation

  • Yi Hu & Chenglong Xiong & Zhijie Zhang & Can Luo & Ted Cohen & Jie Gao & Lijuan Zhang & Qingwu Jiang, 2014. "Changing Patterns of Spatial Clustering of Schistosomiasis in Southwest China between 1999–2001 and 2007–2008: Assessing Progress toward Eradication after the World Bank Loan Project," IJERPH, MDPI, vol. 11(1), pages 1-12, January.
  • Handle: RePEc:gam:jijerp:v:11:y:2014:i:1:p:701-712:d:31845
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    Citations

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    Cited by:

    1. Bin Zhu & Jinlin Liu & Yang Fu & Bo Zhang & Ying Mao, 2018. "Spatio-Temporal Epidemiology of Viral Hepatitis in China (2003–2015): Implications for Prevention and Control Policies," IJERPH, MDPI, vol. 15(4), pages 1-17, April.
    2. Yingnan Niu & Rendong Li & Juan Qiu & Xingjian Xu & Duan Huang & Yubing Qu, 2018. "Geographical Clustering and Environmental Determinants of Schistosomiasis from 2007 to 2012 in Jianghan Plain, China," IJERPH, MDPI, vol. 15(7), pages 1-16, July.

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