GREAT FALLS — Cascade County public health officials have reported the state’s first case of West Nile Virus (WNV) in a human. The last human case reported in Cascade County was in 2018. WNV is a virus is primarily spread to people by mosquito bites. The severity and symptoms of WNV can vary widely. Approximately 80% of persons infected experience no symptoms, but up to 20% of infected persons can...
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