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Particle and Fibre Toxicology Volume 8 ,Issue 1 ,2015-03-07
Spatio-temporal analysis of malaria vectors in national malaria surveillance sites in China
Ji-Xia Huang 1 Zhi-Gui Xia 2 Shui-Sen Zhou 2 Xiao-Jun Pu 3 Mao-Gui Hu 1 Da-Cang Huang 4 Zhou-Peng Ren 5 Shao-Sen Zhang 2 Man-ni Yang 2 Duo-Quan Wang 2 Jin-Feng Wang 1
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DOI:10.1186/s13071-015-0741-5
Received 2014-09-11, accepted for publication 2015-02-13, Published 2015-02-13
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摘要

Background To reveal the spatio-temporal distribution of malaria vectors in the national malaria surveillance sites from 2005 to 2010 and provide reference for the current National Malaria Elimination Programme (NMEP) in China. Methods A 6-year longitudinal surveillance on density of malaria vectors was carried out in the 62 national malaria surveillance sites. The spatial and temporal analyses of the four primary vectors distribution were conducted by the methods of kernel k-means and the cluster distribution of the most widely distribution vector of An.sinensis was identified using the empirical mode decomposition (EMD). Results Totally 4 species of Anopheles mosquitoes including An.sinensis, An.lesteri, An.dirus and An.minimus were captured with significant difference of distribution as well as density. An. sinensis was the most widely distributed, accounting for 96.25% of all collections, and its distribution was divided into three different clusters with a significant increase of density observed in the second cluster which located mostly in the central parts of China. Conclusion This study first described the spatio-temporal distribution of malaria vectors based on the nationwide surveillance during 2005–2010, which served as a baseline for the ongoing national malaria elimination program.

关键词

Surveillance sites; Cluster; Spatio-temporal distribution;Malaria vectors

授权许可

2015 Huang et al.; licensee BioMed Central.
http://creativecommons.org/licenses/by/2.0/

图表

Figure 1. The national malaria surveillance sites in 2005–2010 of China, and the purple points represent the 62 national malaria surveillance sites.

Figure 2. Seasonal distributions of An.sinensis (A) and An.lesteri, An. dirus and An. minimus (B) in the surveillance sites during 2005–2010.

Figure 3. The spatial distribution of malaria vectors in the surveillance sites of China during 2005–2010. (A. An. sinensis; B. An. lesteri; C. An. minimus; D. An. dirus).

Figure 4. The cluster distribution ofAn. sinensisin the surveillance sites during 2005–2010.

Figure 5. EMD decomposition of the three clusters ofAn. sinensisdensity: (A) first cluster (low density) (B) second cluster (medium density) (C) third cluster (high density).

Table 1.

推荐引用方式

Ji-Xia Huang,Zhi-Gui Xia,Shui-Sen Zhou,Xiao-Jun Pu,Mao-Gui Hu,Da-Cang Huang,Zhou-Peng Ren,Shao-Sen Zhang,Man-ni Yang,Duo-Quan Wang,Jin-Feng Wang. Spatio-temporal analysis of malaria vectors in national malaria surveillance sites in China. Particle and Fibre Toxicology ,Vol.8, Issue 1(2015)

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