As of early September 2025, three West Nile virus (WNV) cases have been reported in Davis County, including one death and two hospitalizations. Nearby Utah County has also seen eight human cases and one death. With the local risk on the rise, residents and property owners are paying closer attention to ways to reduce mosquito exposure.
While personal precautions are helpful, addressing mosquito populations directly on your property is one of the most effective ways to mitigate the risks associated with West Nile virus.
What Is West Nile Virus?
West Nile virus is an arbovirus transmitted primarily by mosquitoes. According to the CDC, symptoms of a West Nile virus infection typically appear within two to 14 days after a mosquito bite. Many people experience mild symptoms, while others may develop severe complications, including encephalitis or inflammation of the brain.
Common signs of West Nile virus include:
- Fever
- Headache
- Body aches
- Nausea and vomiting
- Rash
- Swollen lymph nodes
Severe symptoms can include high fever, stiff neck, numbness, or vision loss. Anyone experiencing symptoms should seek medical attention immediately. For a full list of symptoms, visit the CDC’s West Nile Virus Symptoms page.
Understanding West Nile Virus Trends in Davis County
How Common Is This Uptick in Davis County?
West Nile virus cases in Davis County are relatively uncommon but not unprecedented. Historically, Utah reports only a handful of human cases each year, with most infections being mild or asymptomatic. However, the recent increase in hospitalizations signals an active local mosquito population carrying the virus. While this doesn’t necessarily indicate a widespread outbreak, it does highlight the potential for increased transmission and underscores the need for residents to take precautions seriously.
How Much Should Locals Be Concerned?
The risk of contracting West Nile virus remains relatively low for the general population, but the recent severe cases demonstrate that serious outcomes are possible, especially for older adults or those with weakened immune systems. The CDC notes that about 1 in 5 infected people develop symptoms, and roughly 1 in 150 infections can lead to severe illness such as encephalitis or meningitis.
When Does the Local Mosquito Season in Davis County End?
Mosquito season in the Ogden area of Davis County typically begins in late spring as temperatures rise and continues through early fall. Peak mosquito activity usually occurs in July through September, which aligns with the timing of the recent WNV cases. By mid-October, cooler temperatures usually curb mosquito activity, effectively reducing the risk of new infections.
Early Steps to Reduce Mosquito Risks
Homeowners and businesses can take practical steps to reduce mosquito breeding areas.
These steps include:
- Eliminating standing water. Empty containers such as buckets, flower pots, birdbaths, and pet dishes where water collects.
- Maintaining screens and netting. Ensure windows and doors are fitted with screens to keep mosquitoes out and consider mosquito nets for outdoor sleeping areas.
- Wearing protective clothing. Light-colored, long-sleeved clothing treated with permethrin can help repel mosquitoes.
- Avoiding peak hours. Mosquitoes are most active at dawn and dusk, so limit outdoor exposure during these times.
While these actions reduce immediate risk, they do not fully address mosquitoes breeding on your property or in nearby areas.
Tips for Mosquito Management Around Your Property
Ogden and Davis County’s landscapes and climate create favorable conditions for mosquitoes throughout the year.
Some additional strategies to mitigate risks include:
- Trim shrubs and landscaping. Dense vegetation offers mosquitoes hiding spots.
- Check irrigation systems. Repair leaks or overwatering to prevent standing water.
- Install mesh screens on patios. Create mosquito-free outdoor living areas.
- Use native mosquito-repelling plants. Lavender and sagebrush add beauty while reducing mosquito activity.
Signs Your Property May Have a Mosquito Infestation
Early intervention, consistent treatments, and careful property management are critical in decreasing the risks of West Nile virus. Recognizing an infestation early allows for targeted mitigation before mosquito populations grow.
Key signs include:
- Sudden increase in mosquito activity during the day or around dusk and dawn
- Frequent itchy bites despite personal protection
- Standing water in containers, puddles, or clogged gutters
- Mosquito larvae in stagnant water
- Buzzing or swarming around your yard or patio
If you notice these signs, acting quickly can limit mosquito numbers and reduce the likelihood of disease transmission.
Why Professional Mosquito Control Matters
Mosquitoes may be small, but they can carry serious illnesses as we’ve witnessed recently right here in Davis County. If you’re looking for local professionals to help reduce your risk, Mountain West Pest Control specializes in mosquito control.
Our professional interventions are designed to:
- Identify and target breeding sites effectively
- Apply EPA-approved treatments safely
- Reduce adult mosquito populations and larvae
- Provide ongoing monitoring and maintenance to keep mosquito numbers low
As we’ve stressed, early action is key. Mosquitoes can lay hundreds of eggs in tiny amounts of water, making professional assessments and targeted action critical to breaking the breeding cycle. That is why we address problems at their source, zeroing in on the areas where mosquitoes breed and rest.
This process includes:
- Thorough property inspections. Our technicians locate breeding grounds and high-activity areas.
- Targeted treatments. Safe, effective applications reduce adult and larval mosquito populations.
- Preventative recommendations. We advise on drainage, landscaping, and water management to limit mosquito habitats.
- Ongoing maintenance plans. Regular follow-ups ensure long-lasting results and continued protection.
By taking a multi-pronged approach, we can significantly reduce populations, providing peace of mind for homeowners and business owners alike.
Protect Your Family and Community
Mosquitoes are more than just a nuisance—they are vectors for serious diseases. The recent rise in severe cases of West Nile virus in Davis County highlights this unfortunate reality. To help safeguard yourself, your family, and the community, we strongly recommend proactive mitigation and staying informed on local updates through the Utah Department of Health West Nile Virus page.
Don’t wait until mosquito activity increases—take proactive steps now. Call Mountain West Pest Control today at (801) 874-1412 or contact us online to schedule a comprehensive mosquito control service.