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Influence of Host and Environmental Factors on the Distribution of the Japanese Encephalitis Vector Culex tritaeniorhynchus in China

Department of Veterinary Surgery, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
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Int. J. Environ. Res. Public Health 2018, 15(9), 1848; https://doi.org/10.3390/ijerph15091848
Received: 4 July 2018 / Revised: 23 August 2018 / Accepted: 25 August 2018 / Published: 27 August 2018
(This article belongs to the Section Environmental Health)
Culex tritaeniorhynchus is an important vector that transmits a variety of human and animal diseases. Japanese encephalitis (JE), an endemic disease in the Asia-Pacific region, is primarily transmitted by Cx. tritaeniorhynchus. Insufficient monitoring of vector mosquitoes has led to a poor understanding of the distribution of Cx. tritaeniorhynchus in China. To delineate the habitat of Cx. tritaeniorhynchus and any host and environmental factors that affect its distribution, we used a maximum entropy modeling method to predict its distribution in China. Our models provided high resolution predictions on the potential distribution of Cx. tritaeniorhynchus. The predicted suitable habitats of the JE vector were correlated with areas of high JE incidence in parts of China. Factors driving the distribution of Cx. tritaeniorhynchus in China were also revealed by our models. Furthermore, human population density and the maximum NDVI were the most important predictors in our models. Bioclimate factors and elevation also significantly impacted the distribution of Cx. tritaeniorhynchus. Our findings may serve as a reference for vector and disease control. View Full-Text
Keywords: Culex tritaeniorhynchus; Japanese encephalitis; host; environmental factors; maximum entropy model; mosquito-borne zoonosis Culex tritaeniorhynchus; Japanese encephalitis; host; environmental factors; maximum entropy model; mosquito-borne zoonosis
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Liu, B.; Gao, X.; Ma, J.; Jiao, Z.; Xiao, J.; Wang, H. Influence of Host and Environmental Factors on the Distribution of the Japanese Encephalitis Vector Culex tritaeniorhynchus in China. Int. J. Environ. Res. Public Health 2018, 15, 1848.

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