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首页> 外文期刊>The American Journal of Tropical Medicine and Hygiene >Avian hosts of west nile virus in arizona
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Avian hosts of west nile virus in arizona

机译：西尼罗河病毒在亚利桑那州的禽宿主

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摘要

West Nile virus (WNV) causes sporadic outbreaks of human encephalitis in Phoenix, Arizona. To identify amplifying hosts of WNV in the Phoenix area, we blood-sampled resident birds and measured antibody prevalence following an outbreak in the East Valley of metropolitan Phoenix during summer, 2010. House sparrow (Passer domesticus), house finch (Haemorhous mexicanus), great-tailed grackle (Quiscalus mexicanus), and mourning dove (Zenaida macroura) accounted for most WNV infections among locally resident birds. These species roost communally after early summer breeding. In September 2010, Culex vector-avian host contact was 3-fold greater at communal bird roosts compared with control sites, as determined by densities of resting mosquitoes with previous vertebrate contact (i.e., blood-engorged or gravid mosquitoes). Because of the low competence of mourning doves, these were considered weak amplifiers but potentially effective free-ranging sentinels. Highly competent sparrows, finches, and grackles were predicted to be key amplifying hosts for WNV in suburban Phoenix.
机译：西尼罗河病毒（WNV）在亚利桑那州凤凰城引起人类脑炎的零星爆发。为了确定凤凰城地区WNV的扩增宿主，我们在2010年夏季大城市凤凰城东山谷爆发后对居民鸟进行了血液采样并测量了抗体的流行率。麻雀（Passer domesticus），雀科（Haemorhous mexicanus），大尾gra（Quiscalus mexicanus）和哀鸽（Zenaida macroura）是当地鸟类中大多数WNV感染的原因。这些物种在初夏繁殖后共同栖息。 2010年9月，根据静息蚊子与先前脊椎动物接触的密度（即血液充血或妊娠的蚊子）确定，在公共鸟类栖息处的库克斯病媒-禽类宿主接触比对照站点高3倍。由于哀鸽的能力低下，这些鸽子被认为是较弱的放大器，但可能是有效的自由放哨哨兵。据预测，高能麻雀，雀科和sp毛是凤凰城郊区WNV的主要放大宿主。

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