OHA release – For the first time in 2024, mosquitoes carrying West Nile virus have been identified in Oregon. Health officials say three mosquito pools – collections of up to 50 insects – have tested positive for West Nile virus in Malheur County. Mosquitoes thrive and breed vigorously in warm summer temperatures, especially in the 80-90 degree range, so it’s important to protect yourself from mosquito bites in case the bugs are carrying West Nile. While most infected people do not become sick, one in five experience flu-like symptoms lasting from a few days to several weeks. These include a fever above 100 degrees, severe headaches, stiff neck, mental confusion, muscle weakness, shaking, paralysis or rash. If you develop any of these symptoms, seek medical attention immediately. West Nile virus can sometimes lead to serious illness or death. Groups at risk for severe West Nile illness include adults 60 and older, immunocompromised people and those living with certain conditions such as diabetes, high blood pressure or kidney disease. There are no vaccines to prevent or medicines to treat West Nile in people. Tips for preventing mosquito bites: Apply insect repellent to exposed skin. We recommend products containing DEET, oil of lemon eucalyptus or Picaridin. Avoid applying repellent to the hands of children because it can irritate the eyes and mouth. Weather permitting, wear long-sleeved shirts and long pants whenever you are outdoors. Place mosquito netting over infant carriers when outdoors with infants. Consider staying indoors at dawn and dusk, which are peak mosquito biting times. Install or repair window and door screens so mosquitoes cannot get indoors. Last year, a total of 70 mosquito pools tested positive statewide, mostly in eastern and southern Oregon beginning in late July. To learn more, check out OHA’s West Nile Virus Activity webpage. People can also contact their local vector control district.
