Environmental risk factors for equine West Nile virus disease cases in Texas

被引:12
作者
Ward, Michael P. [1 ,2 ]
Wittich, Courtney A. [2 ]
Fosgate, Geoffrey [2 ]
Srinivasan, Raghavan [3 ,4 ]
机构
[1] Univ Sydney, Fac Vet Sci, Camden, NSW 2570, Australia
[2] Texas A&M Univ, Dept Vet Integrat Biosci, College Stn, TX 77843 USA
[3] Texas A&M Univ, Dept Ecosyst Sci & Management, College Stn, TX 77843 USA
[4] Texas A&M Univ, Spatial Sci Lab, College Stn, TX 77843 USA
关键词
West Nile virus; Equine; Spatial epidemiology; GIS; Risk factors; Texas; IDENTIFICATION; INFECTION; CAMARGUE; HORSES;
D O I
10.1007/s11259-008-9192-1
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
West Nile Virus (WNV) was first detected in the Texas equine population during June 2002. Infection has since spread rapidly across the state and become endemic in the equine population. Environmental risk factors associated with equine WNV attack rates in Texas counties during the period 2002 to 2004 were investigated. Equine WNV attack rates were smoothed using an empirical Bayesian model, because of the variability among county equine populations (range 46-9,517). Risk factors investigated included hydrological features (lakes, rivers, swamps, canals and river basins), land cover (tree, mosaic, shrub, herbaceous, cultivated and artificial), elevation, climate (rainfall and temperature), and reports of WNV-positive mosquito and wild bird samples. Estimated county equine WNV attack rate was best described by the number of lakes, presence of broadleaf deciduous forest, presence of cultivated areas, location within the Brazos River watershed, WNV-positive mosquito status and average temperature. An understanding of environmental factors that increase equine WNV disease risk can be used to design and target disease control programs.
引用
收藏
页码:461 / 471
页数:11
相关论文
共 27 条
[1]  
Anselin L., 2005, EXPLORING SPATIAL DA, DOI [10.1080/03461238.1963.10410606, DOI 10.1111/J.1435-5957.2010.00279.X/FULL]
[2]   Host feeding patterns of established and potential mosquito vectors of West Nile virus in the eastern United States [J].
Apperson, CS ;
Hassan, HK ;
Harrison, BA ;
Savage, HM ;
Aspen, SE ;
Farajollahi, A ;
Crans, W ;
Daniels, TJ ;
Falco, RC ;
Benedict, M ;
Anderson, M ;
McMillen, L ;
Unnasch, TR .
VECTOR-BORNE AND ZOONOTIC DISEASES, 2004, 4 (01) :71-82
[3]  
BLITVICH BJ, 2003, EMERG INFECT DIS, V9, P20
[4]  
Bolling BG, 2005, J VECTOR ECOL, V30, P186
[5]   Spatial Analysis of West Nile Virus: Rapid Risk Assessment of an Introduced Vector-Borne Zoonosis [J].
Brownstein, John S. ;
Rosen, Hilary ;
Purdy, Dianne ;
Miller, James R. ;
Merlino, Mario ;
Mostashari, Farzad ;
Fish, Durland .
VECTOR-BORNE AND ZOONOTIC DISEASES, 2002, 2 (03) :157-+
[6]   West Nile virus infection of horses [J].
Castillo-Olivares, J ;
Wood, J .
VETERINARY RESEARCH, 2004, 35 (04) :467-483
[7]  
Centers for Disease Control and Prevention (CDC), 2002, MMWR Morb Mortal Wkly Rep, V51, P1129
[8]   Avian GIS models signal human risk for West Nile virus in Mississippi [J].
Cooke III W.H. ;
Grala K. ;
Wallis R.C. .
International Journal of Health Geographics, 5 (1)
[9]  
EPSTEIN PR, 2001, J URBAN HLTH B NEW Y, V78, P201
[10]   Factors affecting the geographic distribution of West Nile virus in Georgia, USA: 2002-2004 [J].
Gibbs, SEJ ;
Wimberly, MC ;
Madden, M ;
Masour, J ;
Yabsley, MJ ;
Stallknecht, DE .
VECTOR-BORNE AND ZOONOTIC DISEASES, 2006, 6 (01) :73-82