...
首页> 外文期刊>Emerging Infectious Diseases >Drought-Induced Amplification of Saint Louis encephalitis virus, Florida
【24h】

Drought-Induced Amplification of Saint Louis encephalitis virus, Florida

机译:佛罗里达圣路易斯脑炎病毒的干旱诱导扩增

获取原文
           

摘要

We used a dynamic hydrology model to simulate water table depth (WTD) and quantify the relationshipbetween Saint Louis encephalitis virus (SLEV) transmission and hydrologic conditions in Indian RiverCounty, Florida, from 1986 through 1991, a period with an SLEV epidemic. Virus transmission followedperiods of modeled drought (specifically low WTDs 12 to 17 weeks before virus transmission, followed bya rising of the water table 1 to 2 weeks before virus transmission). Further evidence from collections ofCulex nigripalpus (the major mosquito vector of SLEV in Florida) suggests that during extended springdroughts vector mosquitoes and nestling, juvenile, and adult wild birds congregate in selected refuges,facilitating epizootic amplification of SLEV. When the drought ends and habitat availability increases, theSLEV-infected Cx. nigripalpus and wild birds disperse, initiating an SLEV transmission cycle. These find-ings demonstrate a mechanism by which drought facilitates the amplification of SLEV and its subsequenttransmission to humans
机译:我们使用动态水文学模型来模拟地下水深度(WTD),并量化1986年至1991年SLEV流行时期的圣路易斯脑炎病毒(SLEV)传播与佛罗里达州印第安河县的水文状况之间的关系。病毒传播发生在模型干旱时期(特别是在病毒传播之前12至17周的低WTD,随后在病毒传播之前1至2周升高地下水位)。从库蚊(佛罗里达州SLEV的主要蚊媒)收集的进一步证据表明,在春季暴风雨期间,矢量蚊子和雏鸟,幼鸟和成年野鸟聚集在选定的避难所中,促进了SLEV的流行。当干旱结束并且栖息地可用性增加时,SLEV感染的Cx。黑猩猩和野鸟散开,开始了SLEV传播周期。这些发现证明了干旱促进SLEV扩增及其随后向人类传播的机制

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号