Kern County Public Health has confirmed the first human case of West Nile virus (WNV) in Kern County
for 2026. Last year, the county reported 21 confirmed cases.
West Nile virus is spread through the bite of an infected mosquito and is most common during the
summer and early fall when mosquito populations are at their peak. Although many people who
become infected have no symptoms or only mild illness, the virus can cause serious complications and
in rare instances can be fatal.
About one in five people infected with West Nile virus will develop symptoms, which may include fever,
headache, body aches, nausea, vomiting, or a skin rash. Fewer than one percent of infected individuals
develops severe neurological illness, with symptoms such as high fever, stiff neck, confusion, muscle
weakness, or disorientation. Anyone experiencing symptoms consistent with West Nile virus should
contact a healthcare provider for evaluation.
Protect Yourself and Your Family
Reduce Mosquito Breeding Sites
- Empty standing water from flowerpots, birdbaths, fountains, pet bowls and other outdoor
containers.
- Clean and scrub water-holding containers at least once a week to remove mosquito eggs.
- Keep swimming pools properly maintained and circulating.
- Stock ornamental ponds with mosquito-eating fish where appropriate.
- Report mosquito breeding or nuisance mosquito activity to your local vector control district.
Prevent Mosquito Bites
- Limit time outdoors when mosquitoes are most active, especially around dawn and dusk.
- Wear long-sleeved shirts and long pants when spending time outside.
- Apply an EPA-registered insect repellent according to the product label.
- Make sure window and door screens are in good repair to help keep mosquitoes out of your home.
For the latest West Nile virus information, prevention tips, and surveillance updates, visit our interactive
West Nile virus webpage. Residents experiencing excessive mosquito activity around their home or
neighborhood should contact their local mosquito and vector control agency.
Media Contact: Michelle Corson, 661-868-0288