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West Nile and other arboviruses are transmitted primarily through the bite of an infected mosquito or tick.
西尼罗病毒和其它虫媒病毒主要通过被感染蚊虫或壁虱叮咬传染。
These viruses cause thousands of people to get sick each summer.
每年这些病毒可导致数千人患病。
In 2012, there was a substantial increase in the number of West Nile cases reported in the U.S.
2012年，美国的西尼罗病毒感染者明显上升。
The number and severity of outbreaks depend on the weather, the number of animals and mosquitoes that spread the virus, and human behavior.
疫情数量以及严重程度与季节、传播病毒的动物和蚊虫数量，以及人类活动有关。
Reduce your chances of becoming infected by using insect repellant.
使用杀虫剂减少患病几率。
In addition, secure windows and doors to keep mosquitoes out and empty standing water from outdoor containers where mosquitoes can breed.
此外，确保门窗可以遮挡蚊虫进入，清理户外水池死水，蚊虫极易在这里繁殖。
译文属可可英语原创，未经允许，不得转载。
