Magna Mosquito Abatement District MMAD has been testing mosquitoes every Tuesday and Thursday this summer and unfortunately we have found our first positive mosquitoes.

On July 23, 2025 two mosquito samples (collections of 25-100 mosquitoes) tested positive for West Nile Virus. One in West Valley City near (6400 W 5400 S) and one on the West Valley City/Magna border. (7200 West California Avenue)  

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.