Of those, the health department says four are neuroinvasive cases, meaning they're the more serious form of the illness.

"Between the high number of positive mosquito pools and multiple human cases with symptoms, it is clear that West Nile virus is actively present and being detected across Utah County," the health department said in its release.

To help mitigate the spread and protect others from potentially becoming infected, Utah County mosquito abatement crews are conducting additional assessments and applying targeted treatments in the neighborhoods where these cases were identified.

The health department did not specify which area or areas of the county the five cases were confirmed in.

However, they say enhanced efforts will hopefully reduce mosquito populations and lower further risks of transmission.

According to the Utah County Health Department, those infected won't develop any symptoms in most cases, but some may experience the following:

The Utah County Health Department urges residents to prevent mosquito bites by using insect repellent, wearing long sleeves at dawn and dusk, eliminating standing water and ensuring window and door screens are in good condition.