西尼罗河病毒在中欧地区越冬蚊媒中的分布情况。
West Nile virus in overwintering mosquitoes, central Europe.
机构信息
Institute of Vertebrate Biology, Czech Academy of Sciences, v.v.i, Brno, Czech Republic.
Department of Experimental Biology, Masaryk University, Brno, Czech Republic.
出版信息
Parasit Vectors. 2017 Oct 2;10(1):452. doi: 10.1186/s13071-017-2399-7.
BACKGROUND
West Nile virus (WNV) is currently the most important mosquito-borne pathogen spreading in Europe. Data on overwintering of WNV in mosquitoes are crucial for understanding WNV circulation in Europe; nonetheless, such data were not available so far.
RESULTS
A total of 28,287 hibernating mosquitoes [27,872 Culex pipiens, 73 Anopheles maculipennis (sensu lato), and 342 Culiseta annulata], caught in February or March between 2011 and 2017 in a WNV-endemic region of South Moravia, Czech Republic, were screened for the presence of WNV RNA. No WNV positive pools were found from 2011 to 2016, while lineage 2 WNV RNA was detected in three pools of Culex pipens mosquitoes collected in 2017 at two study sites.
CONCLUSIONS
To the best of our knowledge, this is the first record of WNV RNA in overwintering mosquitoes in Europe. The data support the hypothesis of WNV persistence in mosquitoes throughout the winter season in Europe.
背景
西尼罗河病毒（WNV）是目前在欧洲传播的最重要的蚊媒病原体。关于蚊子越冬的 WNV 数据对于了解欧洲 WNV 的传播至关重要；然而，迄今为止，尚无此类数据。
结果
2011 年至 2017 年期间，在捷克共和国南摩拉维亚的一个 WNV 流行地区，2 月或 3 月共捕获了 28287 只冬眠蚊子[27872 只库蚊、73 只致倦库蚊（sensu lato）和 342 只刺扰伊蚊]，用于检测 WNV RNA 的存在。2011 年至 2016 年期间未发现 WNV 阳性池，而 2017 年在两个研究地点收集的三批库蚊（Culex pipiens）蚊子中检测到了 2 型 WNV RNA。
结论
据我们所知，这是欧洲越冬蚊子中存在 WNV RNA 的首次记录。这些数据支持了 WNV 在欧洲整个冬季季节在蚊子中持续存在的假说。
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