Today Lane County Public Health learned a crow sample they had sent in for testing - tested positive for the virus.
Public health officials held a news conference this afternoon.
Saying the infected crow was found in the Gateway area of Springfield on September 15th.
Tamara Wilhite the Lane County West Nile Coordinator, "There are mosquitoes that are infected with it and that people should be extra careful when they're out especially at dawn and dusk and wear mosquito repellant and long sleeves and pants."
Health experts say 80 percent of people infected with west Nile virus will not show any symptoms, while about 19 percent will display mild symptoms and less than one percent suffer severe infection, encephalitis or death.
But since 1999 fewer than 500 people in the US have died from West Nile.
Meanwhile, 36 thousand Americans die each year from influenza or the flu.