TY - JOUR
T1 - Venezuelan equine encephalitis virus, southern Mexico
AU - Estrada-Franco, José G.
AU - Navarro-Lopez, Roberto
AU - Freier, Jerome E.
AU - Cordova, Dionicio
AU - Clements, Tamara
AU - Moncayo, Abelardo
AU - Kang, Wenli
AU - Gomez-Hernandez, Carlos
AU - Rodriguez-Dominguez, Gabriela
AU - Ludwig, George V.
AU - Weaver, Scott C.
PY - 2004/12
Y1 - 2004/12
N2 - Equine epizootics of Venezuelan equine encephalitis (VEE) occurred in the southern Mexican states of Chiapas in 1993 and Oaxaca in 1996. To assess the impact of continuing circulation of VEE virus (VEEV) on human and animal populations, serologic and viral isolation studies were conducted in 2000 to 2001 in Chiapas State. Human serosurveys and risk analyses indicated that long-term endemic transmission of VEEV occurred among villages with seroprevalence levels of 18% to 75% and that medical personnel had a high risk for VEEV exposure. Seroprevalence in wild animals suggested cotton rats as possible reservoir hosts in the region. Virus isolations from sentinel animals and genetic characterizations of these strains indicated continuing circulation of a subtype IE genotype, which was isolated from equines during, the recent VEE outbreaks. These data indicate long-term enzootic and endemic VEEV circulation in the region and continued risk for disease in equines and humans.
AB - Equine epizootics of Venezuelan equine encephalitis (VEE) occurred in the southern Mexican states of Chiapas in 1993 and Oaxaca in 1996. To assess the impact of continuing circulation of VEE virus (VEEV) on human and animal populations, serologic and viral isolation studies were conducted in 2000 to 2001 in Chiapas State. Human serosurveys and risk analyses indicated that long-term endemic transmission of VEEV occurred among villages with seroprevalence levels of 18% to 75% and that medical personnel had a high risk for VEEV exposure. Seroprevalence in wild animals suggested cotton rats as possible reservoir hosts in the region. Virus isolations from sentinel animals and genetic characterizations of these strains indicated continuing circulation of a subtype IE genotype, which was isolated from equines during, the recent VEE outbreaks. These data indicate long-term enzootic and endemic VEEV circulation in the region and continued risk for disease in equines and humans.
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U2 - 10.3201/eid1012.040393
DO - 10.3201/eid1012.040393
M3 - Article
C2 - 15663847
AN - SCOPUS:9744268890
SN - 1080-6040
VL - 10
SP - 2113
EP - 2121
JO - Emerging infectious diseases
JF - Emerging infectious diseases
IS - 12
ER -