Seasonal patterns for entomological measures of risk for exposure to Culex vectors and West Nile virus in relation to human disease cases in northeastern Colorado.
Seasonal patterns for entomological measures of risk for exposure to Culex vectors and West Nile virus in relation to human disease cases in northeastern Colorado.
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DOI：
10.1603/033.046.0641
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发表时间：
2009-11
影响因子：
2.1
通讯作者：
Eisen L
中科院分区：
文献类型：
--
作者：
Bolling BG;Barker CM;Moore CG;Pape WJ;Eisen L
我们研究了2006-2007年科罗拉多州东北部一个五县地区与人类西尼罗河病毒病例相关的昆虫学风险指标的季节模式，以衡量暴露于库蚊媒介和西尼罗河病毒(黄毒科，黄病毒属)的风险。2006年关于栖息地/海拔梯度的研究表明，与科罗拉多州前缘海拔1600米的平原地区相比，海拔1600米的山麓山地地区的淡色库蚊雌性蚊虫的季节性活动周期缩短，高峰出现在夏季较晚的时候。2007年对科罗拉多州东北部平原的研究表明，CX的季节丰度模式。塔尔萨利斯库蚊和淡色库蚊雌蚊的Cx不同。蒲公英在7月上旬达到高峰(18个平原点平均每晚328.9只雌虫)，而CX则达到高峰。直到8月下旬才发生，平均每晚16.4头。在2007年6-9月，这是科罗拉多州西尼罗河病毒活动强烈的一年，报告了578例西尼罗河病毒病例，我们记录了西尼罗河病毒感染的Cx。来自平原18个地点中的16个地点的雌性狼蛛。CX地区西尼罗河病毒感染率。从6月下旬至8月中旬，女性鞑靼病逐渐增加(平原地区8月中旬西尼罗河病毒感染率的总体最大似然估计为每1000名女性8.29人)。在1600米的采样点没有记录到感染西尼罗河病毒的库蚊。从7月中旬到8月中旬，平原地区的蒲公英雌虫总数超过0.50只，从7月初到8月下旬，至少有一个地点超过1.00只。最后，我们发现了Cx的丰度。女性和感染女性的媒介指数与每周发病后4-7wk(雌性丰度)或1-2wk(媒介指数)的西尼罗河病毒病例数密切相关。
We examined seasonal patterns for entomological measures of risk for exposure to Culex vectors and West Nile virus (family Flaviviridae, genus Flavivirus, WNV) in relation to human WNV disease cases in a five-county area of northeastern Colorado during 2006–2007. Studies along habitat/elevation gradients in 2006 showed that the seasonal activity period is shortened and peak numbers occur later in the summer for Culex tarsalis Coquillett females in foothills-montane areas >1,600 m compared with plains areas <1,600 m in Colorado’s Front Range. Studies in the plains of northeastern Colorado in 2007 showed that seasonal patterns of abundance for Cx. tarsalis and Culex pipiens L. females differed in that Cx. tarsalis reached peak abundance in early July (mean of 328.9 females per trap night for 18 plains sites), whereas the peak for Cx. pipiens did not occur until late August (mean of 16.4 females per trap night). During June–September in 2007, which was a year of intense WNV activity in Colorado with 578 reported WNV disease cases, we recorded WNV-infected Cx. tarsalis females from 16 of 18 sites in the plains. WNV infection rates in Cx. tarsalis females increased gradually from late June to peak in mid-August (overall maximum likelihood estimate for WNV infection rate of 8.29 per 1,000 females for the plains sites in mid-August). No WNV-infected Culex mosquitoes were recorded from sites >1,600 m. The vector index for abundance of WNV-infected Cx. tarsalis females for the plains sites combined exceeded 0.50 from mid-July to mid-August, with at least one site exceeding 1.00 from early July to late August. Finally, we found that abundance of Cx. tarsalis females and the vector index for infected females were strongly associated with weekly numbers of WNV disease cases with onset 4–7 wk later (female abundance) or 1–2 wk later (vector index).
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影响因子：
2.1
作者：
Reisen WK;Carroll BD;Takahashi R;Fang Y;Garcia S;Martinez VM;Quiring R
通讯作者：
Quiring R
影响因子：
5
作者：
Mather, TN;Nicholson, MC;Matyas, BT
通讯作者：
Matyas, BT
影响因子：
1.7
作者：
Braks, Marieta A. H.;Carde, Ring T.
通讯作者：
Carde, Ring T.
DOI：
10.4269/ajtmh.1979.28.335
发表时间：
1979-01-01
影响因子：
3.3
作者：
OLSON, JG;REEVES, WC;MILBY, MM
通讯作者：
MILBY, MM
影响因子：
2.1
作者：
REISEN, WK;LOTHROP, HD;HARDY, JL
通讯作者：
HARDY, JL