Magna Mosquito Abatement has tested and found West Nile Virus (WNV) positive mosquitoes in Magna and West Valley City. This page will be updated as the season progresses.

Update: 8/2/2026 To date we have found a total of 48 positive mosquito samples in our mosquito traps. an increase of 25 positive samples in the past week alone.

As we work to mitigate the mosquito population you will notice an increase of activity by us at night in neighborhoods. Our ULV "Fog Trucks" will be going through neighborhoods more than we have in the past few years due to the high amounts of WNV we are seeing. At this time last year we had 2 WNV positive mosquito samples. MMAD would strongly urge the public to do what you can to protect yourself from mosquito bites.

WNV is endemic in Utah and this is the time of year we usually start finding it.  MMAD will do our best to mitigate the number of mosquitoes people see but we would ask people to protect themselves as well. From dusk to dawn wear long sleeves when outdoors and wear mosquito repellent containing deet.

WNV can cause mild to severe illness and many people may not even know they have been infected. It is estimated that less than 1% of people infected with WNV will develop the neuroinvasive form of the disease, which can result in debilitating long-term complications or death. Symptoms of WNV infection appear within 2 to 14 days of a mosquito bite and include fever, headache and body aches. More severe infections may include high fever, neck stiffness, disorientation, coma, tremors and muscle weakness or convulsions.

People over age 50 and people with weakened immune systems are at the highest risk of illness due to WNV, but anyone can become ill from the bite of an infected mosquito. WNV is not transmissible from person to person.

There is no specific treatment for WNV infection other than to treat symptoms. If you think you have WNV infection, contact your health care provider.

 If you have any questions, feel free to contact our office.