Rochlin Ilia, Ginsberg Howard S, Campbell Scott R
Suffolk County Department of Public Works, Yaphank, New York 11980-9744, USA.
Am J Trop Med Hyg. 2009 Apr;80(4):661-8.
Culex species were monitored at three proximate sites with historically different West Nile virus (WNV) activities. The site with human WNV transmission (epidemic) had the lowest abundance of the putative bridge vectors, Culex pipiens and Cx. salinarius. The site with horse cases but not human cases (epizootic) had the highest percent composition of Cx. salinarius, whereas the site with WNV-positive birds only (enzootic) had the highest Cx. pipiens abundance and percent composition. A total of 29 WNV-positive Culex pools were collected at the enzootic site, 17 at the epidemic site, and 14 at the epizootic site. Published models of human risk using Cx. pipiens and Cx. salinarius as the primary bridge vectors did not explain WNV activity at our sites. Other variables, such as additional vector species, environmental components, and socioeconomic factors, need to be examined to explain the observed patterns of WNV epidemic activity.
在三个地理位置相近、历史上西尼罗河病毒（WNV）活动情况不同的地点对库蚊属进行了监测。存在人类WNV传播（流行）的地点，假定的桥梁媒介淡色库蚊和盐泽库蚊的数量最少。出现马感染病例但无人类病例（动物流行病）的地点，盐泽库蚊的占比最高，而仅出现WNV阳性鸟类（动物疫源）的地点，淡色库蚊的数量和占比最高。在动物疫源地共采集到29个WNV阳性库蚊样本池，在流行地采集到17个，在动物流行病地采集到14个。以淡色库蚊和盐泽库蚊作为主要桥梁媒介的已发表的人类风险模型无法解释我们研究地点的WNV活动情况。需要研究其他变量，如其他媒介物种、环境因素和社会经济因素，以解释观察到的WNV流行活动模式。
