南加州虫媒病毒的景观生态学：1991 - 1992年科切拉山谷西部马脑炎病毒和圣路易斯脑炎病毒的动物流行病传播模式

Landscape ecology of arboviruses in southern California: patterns in the epizootic dissemination of western equine encephalomyelitis and St. Louis encephalitis viruses in Coachella Valley, 1991-1992.

作者信息

Reisen W K, Hardy J L, Lothrop H D

机构信息

Arbovirus Research Program, School of Public Health, University of California, Berkeley 94720, USA.

出版信息

J Med Entomol. 1995 May;32(3):267-75. doi: 10.1093/jmedent/32.3.267.

DOI:10.1093/jmedent/32.3.267

PMID:7616516

Abstract

Temporal and spatial patterns in the initiation and dissemination of western equine encephalomyelitis and St. Louis encephalitis virus activity in Coachella Valley during 1991 and 1992 were detected by testing pools of host-seeking Culex tarsalis Coquillett for virus infection and sentinel chickens for seroconversions. Both viruses repeatedly were detected first at a salt marsh adjacent to the Salton Sea in the southeastern corner of the study area and then disseminated to the northwest to freshwater marsh, agricultural, and residential habitats. Virus dissemination was relatively slow (< 1 km/d) and may have been accomplished by dispersive host-seeking mosquitoes. Repeated early-season recovery of virus activity indicated that both viruses may persist interseasonally in salt marsh habitat.

摘要

通过检测寻找宿主的塔尔西斯库蚊（Culex tarsalis Coquillett）群体的病毒感染情况以及哨兵鸡的血清转化情况，发现了1991年和1992年期间西尼罗河马脑炎病毒和圣路易斯脑炎病毒在科切拉山谷的起始和传播的时空模式。两种病毒均首先在研究区域东南角索尔顿海附近的盐沼中反复被检测到，然后向西北传播至淡水沼泽、农业和居住栖息地。病毒传播相对缓慢（<1公里/天），可能是由寻找宿主的扩散性蚊子完成的。病毒活动在季节早期的反复发现表明，两种病毒可能在盐沼栖息地跨季节持续存在。