Original Articles
Vol. 13 No. 1 (2018)
https://doi.org/10.4081/gh.2018.644

Spatial prediction of the risk of exposure to Echinococcus spp. among schoolchildren and dogs in Ningxia Hui Autonomous Region, People's Republic of China

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Received: 8 November 2017
Published: 7 May 2018
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Echinococcus granulosus, Echinococcus multilocularis, Environment, Geographic information systems, Ningxia Hui Autonomous region, China.

Authors

Angela M. Cadavid Restrepo
angela.cadavid@anu.edu.au
http://orcid.org/0000-0003-0359-9410 (unauthenticated)
Research School of Population Health, Australian National University, Canberra, Australia.
Yu Rong Yang
Ningxia Medical University, Xingqing, Yinchuan, China.
Donald P. McManus
Molecular Parasitology Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Australia.
Darren J. Gray
Research School of Population Health, Australian National University, Canberra; Molecular Parasitology Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Australia.
Tamsin S. Barnes
School of Veterinary Science, University of Queensland, Gatton; Queensland Alliance for Agriculture and Food Innovation, University of Queensland, Gatton, Australia.
Gail M. Williams
School of Public Health, University of Queensland, Brisbane, Australia.
Ricardo J. Soares Magalhães
School of Veterinary Science, University of Queensland, Gatton; Children's Health and Environment Programme, Queensland Children's Medical Research Institute, University of Queensland, Brisbane, Australia.
Archie C.A. Clements
Research School of Population Health, Australian National University, Canberra, Australia.
The geographical distribution of Echinococcus spp. infections in Ningxia Hui Autonomous Region (NHAR) has been reported to be expanding in response to environmental change. The aim of the present study was to predict and compare the spatial distribution of human seropositivity for Echinococcus granulosus and Echinococcus multilocularis and infections with these parasites in dogs in four counties in the south of NHAR to identify communities where targeted prevention and control efforts are required. Predicted seroprevalence of E. granulosus in schoolchildren and E. granulosus infections in dogs concurred spatially, whereas predicted seroprevalence of E. multilocularis in schoolchildren and E. multilocularis infections in dogs differed spatially. Enhanced vegetation index was significantly associated with E. multilocularis seropositivity among schoolchildren, and infections with E. granulosus and E. multilocularis in dogs. A positive association was also found between dog infection with E. granulosus and cultivated land, and a negative association between human seropositivity for E. granulosus and bare-land/artificial surfaces. The findings of this study support the importance of land cover and climatic variables in determining habitat suitability for Echinococcus spp. infections, and suggest that definitive hosts other than dogs (e.g. foxes) are important in defining the geographical risk of human seropositivity for E. multilocularis in NHAR.

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Spatial prediction of the risk of exposure to Echinococcus spp. among schoolchildren and dogs in Ningxia Hui Autonomous Region, People’s Republic of China. (2018). Geospatial Health, 13(1). https://doi.org/10.4081/gh.2018.644

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