West Nile virus found in two more mosquito pools in Malheur County, Bringing the total to eight for 2025
By Garrett Christensen on Tuesday, August 26th, 2025 in More Top Stories Northeastern Oregon News
VALE – (Release from the Malheur County Health Department) West Nile virus (WNv) has been detected in mosquitoes at two testing sites in Malheur County, according to Malheur County Vector Control. The samples were collected from Annex and five miles north of Vale.
West Nile virus is spread to humans through the bite of an infected mosquito. Health officials are advising people in Malheur County to take precautions to prevent mosquito bites to avoid the risk of infection. People spending a lot of time outdoors, particularly near irrigated land, waterways, standing water, and used tires, including migrant and seasonal farm workers, may be at increased risk of mosquito bites and related diseases.
It is important that you contact your health care provider if you experience symptoms of fever, weakness, and mental confusion. West Nile virus is especially of concern to people 50 and older, people who are immune-compromised, and people with diabetes or high blood pressure. Health care providers can contact the Malheur County Health Department for information on West Nile virus testing.
Emilio DeBess, public health veterinarian, offers these tips for protecting yourself against mosquitoes:
- Get rid of standing water, which is a breeding ground for mosquitoes: watering troughs, bird baths, ornamental ponds, buckets, wading and swimming pools not in use, and old tires.
- Mosquitos are most active at dawn and dusk. Protect yourself by using mosquito repellants containing DEET, oil of lemon eucalyptus or Picaridin. Follow the product directions.
- Wear long-sleeved shirts and long pants in mosquito-infested areas.
- Make sure screen doors and windows have no holes and fit tightly on their frames.
The West Nile virus also affects wildlife and domestic animals. Horse owners should get their horses vaccinated for WNv. Horses with neurologic disease should be examined by a veterinarian. West Nile testing is available at Oregon State University.
Additional information about West Nile virus:
West Nile Virus – Oregon Health Authority
West Nile Virus – U.S. Centers for Disease Control and Prevention
