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First West Nile virus-infected mosquitoes in Idaho this season detected in Canyon County

Mosquitoes infected with West Nile virus (WNV) were detected in Canyon County on June 12, 2018, prompting public health officials to remind people to take precautions to “Fight the Bite.” The positive mosquitoes, which are the first detected in the state this year, were collected by the Canyon County Mosquito Abatement District. 

Last year, 13 counties across the state reported finding WNV-positive mosquito pools. Additionally, WNV infection was reported in 25 people, seven horses, three birds, and one llama. This first detection in 2018 occurred in western Idaho, an area where positive mosquitoes have been found almost every year since WNV was introduced in 2004. 

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