Emergence of a new epidemic/epizootic Venezuelan equine encephalitis virus in South America.

Emergence of a new epidemic/epizootic Venezuelan equine encephalitis virus in South America.
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南美洲出现新的流行病委内瑞拉马脑炎病毒。

DOI:
10.1073/pnas.92.12.5278
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发表时间:
1995
影响因子:
11.1
通讯作者:
Salas,RA
Salas,RA
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Rico-Hesse,R;Weaver,SC;deSiger,J;Medina,G;Salas,RA

文献摘要

被引文献

相似文献

虫媒病毒学中最重要的问题之一是流行性委内瑞拉马脑炎(VEE)病毒的起源;这些病毒从1938年至1973年在美洲引起周期性的广泛流行/动物流行病(1971年到达美国),但最近被认为已经灭绝。我们已经记录了1992年委内瑞拉出现的一种新的流行性/动物流行性VEE病毒。对两次暴发期间分离的毒株进行系统发育分析表明,新的流行/动物流行病毒最近从南美洲北方的地方流行VEE病毒进化而来。这些结果表明,继续出现的流行性VEE病毒,因此,应恢复监测的地方性病毒和常规疫苗接种的马。
One of the most important questions in arbovirology concerns the origin of epidemic Venezuelan equine encephalitis (VEE) viruses; these viruses caused periodic, extensive epidemics/epizootics in the Americas from 1938-1973 (reaching the United States in 1971) but had recently been presumed extinct. We have documented the 1992 emergence of a new epidemic/epizootic VEE virus in Venezuela. Phylogenetic analysis of strains isolated during two outbreaks indicated that the new epidemic/epizootic virus(es) evolved recently from an enzootic VEE virus in northern South America. These results suggest continued emergence of epizootic VEE viruses; surveillance of enzootic viruses and routine vaccination of equines should therefore be resumed.