2 cases of West Nile virus confirmed in Cache County, bringing state’s total to 3
Aug 15, 2025, 8:44 AM | Updated: 10:39 am
FILE: Mosquito. (Bear River Health Department)
(Bear River Health Department)
SALT LAKE CITY — Health officials discovered two confirmed cases of West Nile virus in Cache County, they announced Friday.
The Bear River Health Department announced the news of the two human cases a day after Salt Lake County confirmed a case in its jurisdiction, bringing Utah’s total to three human cases.
“West Nile virus spreads to humans and animals from bites of infected mosquitoes. Symptoms of WNV include fever, headache, rash, vomiting, body aches, and diarrhea. In rare cases, it can lead to neurological problems,” The Bear River Health Department said.
The department also instructed people to follow the “five D’s” to protect themselves from mosquito-borne illness:
- Drain: Get rid of standing water around your home.
- Dawn and Dusk: These are the peak times for mosquitoes. Avoid activities near them at these times.
- DEET: Use bug spray with this ingredient.
- Dress: Wear lightweight, loose-fitting long sleeves and pants outdoors.
- Doors: Make sure doors and windows on your home are in good repair.
“If you develop symptoms such as high fever, severe headache, neck stiffness, disorientation, or muscle weakness, contact your healthcare provider immediately,” the health department said.
About 20% of people who get infected with West Nile virus end up getting symptoms, which can be severe. Patients with severe symptoms typically have a 10% mortality rate, multiple officials said.
It was not immediately announced if the two patients in Cache County had severe symptoms. Officials in Salt Lake County said the patient there had a neuroinvasive form of West Nile virus, a “more severe form of the disease.”
Also on Friday, Idaho’s Department of Health and Welfare announced that a person over the age of 65 died of West Nile virus in Twin Falls County. It was that state’s first reported death from the disease this year.
“This tragic death from West Nile virus is a good reminder for all of us to take protective measures against mosquito bites,” Idaho officials said.
