Nestling passerines are not important hosts for amplification of West Nile Virus in Chicago, Illinois.

Nestling passerines are not important hosts for amplification of West Nile Virus in Chicago, Illinois.
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DOI:
10.1089/vbz.2008.0042
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发表时间:
2009-02
期刊:
Vector borne and zoonotic diseases (Larchmont, N.Y.)
影响因子:
--
通讯作者:
Brawn JD
Brawn JD
中科院分区:
其他
文献类型:
--
作者:
Loss SR;Hamer GL;Goldberg TL;Ruiz MO;Kitron UD;Walker ED;Brawn JD

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据推测,雏鸟是蚊媒虫媒病毒的重要宿主,但雏鸟对西尼罗病毒(WNV)扩增的作用尚不清楚。我们在伊利诺伊州芝加哥市的一个西尼罗河病毒传播激烈的地区取样了开杯和洞巢雀鸟,以确定雏鸟和蚊子的感染率,并测试蚊子是否被筑巢的鸟类吸引。对淡色库蚊种群的分析表明,在研究的两年中,在雏鸟取样地点附近,西尼罗河病毒扩增导致蚊子感染率很高。然而,在12种194只雏鸟中,只有一只8日龄的鹪鹩对西尼罗河病毒RNA呈阳性,只有一只10日龄的哀鸽对西尼罗河病毒抗体呈血清阳性,但滴度很低(1:20)。巢箱诱蚊器与对照诱蚊器的诱蚊数量无显著差异。综上所述,雏鸟雀鸟在芝加哥地区的西尼罗河病毒扩增和传播中没有明显的作用。
Nestling birds have been hypothesized to be important hosts for mosquito-borne arboviruses, but the role of nestlings for West Nile virus (WNV) amplification remains unclear. We sampled open-cup and cavity-nesting passerines in Chicago, Illinois, an area of intense WNV transmission, to determine infection rates in nestlings and mosquitoes, and to test whether mosquitoes are attracted to nesting birds. Analysis of Culex pipiens mosquito populations demonstrated WNV amplification to high mosquito infection rates during both years of the study near the locations where nestlings were sampled. Nevertheless, of 194 nestlings representing 12 species, only one 8-day-old house wren was positive for WNV RNA, and only one 10-day-old mourning dove was seropositive for antibodies to WNV, but at a low titer (1:20). The number of mosquitoes captured in nest box traps and control traps was not significantly different. These combined results suggest that nestling passerines play no evident role in WNV amplification and transmission in the Chicago area.
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