美国芝加哥西尼罗河病毒流行年和非流行年期间的库蚊黄病毒
Culex Flavivirus During West Nile Virus Epidemic and Interepidemic Years in Chicago, United States.
作者信息
Newman Christina M, Krebs Bethany L, Anderson Tavis K, Hamer Gabriel L, Ruiz Marilyn O, Brawn Jeffrey D, Brown William M, Kitron Uriel D, Goldberg Tony L
机构信息
1 Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin-Madison , Madison, Wisconsin.
2 San Francisco Zoo, San Francisco, California.
出版信息
Vector Borne Zoonotic Dis. 2017 Aug;17(8):567-575. doi: 10.1089/vbz.2017.2124. Epub 2017 Jun 19.
Culex flavivirus (CxFV) is an insect-specific flavivirus infecting Culex mosquitoes, which are important vectors of West Nile virus (WNV). CxFV and WNV cocirculate in nature and coinfect Culex mosquitoes, including in a WNV "hotspot" in suburban Chicago. We previously identified a positive association between CxFV and WNV in mosquito pools collected from suburban Chicago in 2006. To further investigate this phenomenon, we compared the spatial and temporal distribution of CxFV during an interepidemic year (2011) and an epidemic year (2012) for WNV. Both viruses were more prevalent in mosquito pools in 2012 compared to 2011. During both years, the CxFV infection status of mosquito pools was associated with environmental factors such as habitat type and precipitation frequency rather than coinfection with WNV. These results support the idea that WNV and CxFV are ecologically associated, perhaps because both viruses respond to similar environmental drivers of mosquito populations.
库蚊黄病毒（CxFV）是一种感染库蚊的昆虫特异性黄病毒，库蚊是西尼罗河病毒（WNV）的重要传播媒介。CxFV和WNV在自然界中共存，并共同感染库蚊，包括在芝加哥郊区的一个WNV“热点地区”。我们之前在2006年从芝加哥郊区采集的蚊群中发现了CxFV和WNV之间的正相关关系。为了进一步研究这一现象，我们比较了WNV的一个流行间期年份（2011年）和一个流行年份（2012年）期间CxFV的空间和时间分布。与2011年相比，2012年两种病毒在蚊群中的流行率都更高。在这两年中，蚊群的CxFV感染状况与栖息地类型和降水频率等环境因素有关，而不是与WNV的共同感染有关。这些结果支持了WNV和CxFV在生态上相关的观点，可能是因为这两种病毒都对蚊群的相似环境驱动因素做出反应。
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