Malheur County Vector Control District

09/15/2025

Last spray schedule for the 2025 mosquito season

09/08/2025

Spray Schedule for September 8th-11th

09/01/2025

September 1-4th spray schedule

08/26/2025

August 25, 2025

FOR IMMEDIATE RELEASE

West Nile Virus Found in Two More Mosquito Pools in Malheur County, Bringing the Total to Eight for 2025

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.

We have officially started our adult mosquito surveillance program. The district would like to remind the public during the season mosquito traps will…

08/25/2025

Spray Schedule for 8/25-8/28 Weather permitting

08/18/2025

08/11/2025

Spray Schedule for August 11th- 14th.
Weather permitting

08/05/2025

For Immediate Release,
Three additional West Nile Virus pools Reported in Malheur County. The samples were collected from Vale, and between Vale and Ontario
https://malheurvector.specialdistrict.org/mosquito-and-west-nile-updates

08/04/2025

Spray Schedule for August 4th- 7th
Wind and weather permitting.

07/30/2025

Attention Malheur County!

Payette County Mosquito Abatement has made us aware of an aerial application that is scheduled for this Sunday evening 8/3/2025. Payette Mosquito Abatement will be spraying Washoe, directly across the river from Ontario to the other side of Payette County. The airplane will be flying to Payette County from the Ontario Airport. If there are any questions or concerns regarding this application, please contact Payette County Mosquito Abatement at 208-642-6835.

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07/28/2025

Attention Malheur County!
Spray Schedule for July 28th - 30th

07/21/2025

Spray Schedule July 21st- 24th