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西尼罗河病毒在科罗拉多州北部的野生蚊子载体中传播,2023年

Jackson R Decook, Molly E Ring, Claire Stewart

Journal of the American Mosquito Control Association

|February 27, 2026

概括

在蚊子身上进行全身西尼罗病毒 (WNV) 测试可能会高估传播风险. 分析蚊子个体组织显示,WNV传播比全身检测更少,从而提高了WNV监测的准确性.

科学领域:

关节动物传播的疾病
媒介性疾病生态学媒介性疾病生态学
分子昆虫学分子昆虫学

背景情况:

西尼罗病毒 (WNV) 传播风险评估通常依赖于集成的蚊子感染数据.
整体蚊子测试可能会膨胀WNV传播潜力的估计.
精确的WNV监测需要精确了解载体能力.

研究的目的:

评估单个野外采集的Culex tarsalis蚊子中的WNV传播情况.
为了比较蚊子腹部的WNVRNA检测与头部和胸部组织.
通过使用组织特异性感染数据来完善WNV传播风险估计.

主要方法:

测试了来自科罗拉多州北部的1,793个单独的Culex tarsalis蚊子,检测WNV.
对WNV RNA进行了腹部查,然后从阳性样本中对应的胸部和头部进行了测试.
使用后勤回归和ROC分析来评估病毒RNA负载和传播.

主要成果:

在15只蚊子的腹部中检测到WNVRNA.
只有53%的腹部感染的蚊子在头部和胸部都显示了WNVRNA.
一个值为59,000个RNA拷贝/腹部预测的传播 (AUC 0.80).

结论:

全身WNVRNA检测可能会高估野蚊的传播潜力.
组织特异性分析可以更准确地衡量WNV传播.
整合基于组织的WNV感染数据可以加强监测和风险评估.

关键词:

这种形形 (Culex tarsalis) 是一种形形形.西尼罗河病毒病毒.在野外收集的蚊子.矢量能力能力矢量能力是指向量能力.病毒传播的传播.

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