County confirms case of the West Nile Virus

The Madera County Department of Public Health (MCDPH) on July 27 confirmed the first human case of West Nile virus (WNV) in Madera County for the 2026 mosquito season.

West Nile virus is spread through the bite of an infected mosquito.

While most people infected do not develop symptoms, some may experience fever, headache, body aches, rash, vomiting or diarrhea.

In rare cases, the virus can cause serious neurological illness.

Public-Health guidance

Residents are encouraged to take simple steps to protect themselves from mosquito bites:

• Use EPA-registered insect repellent.

• Wear long sleeves and pants outdoors especially at dawn and dust.

• Remove standing water around your home.

• Keep doors and windows screened.

• Anyone experiencing symptoms after mosquito exposure should contact their health care provider.

• Severe symptoms, such as confusion, severe headache, stiff neck or muscle weakness, require immediate medical attention.

Resources for more information

The California Department of Public Health Vector-Borne Disease Section’s WNV site: westnile.ca.gov/

The Centers for Disease Control and Prevention’s Mosquito-borne Diseases site: www.cdc.gov/niosh/topics/outdoor/mosquito borne/default.html

Madera County Mosquito & Vector Control District site: www.maderacenter.com/campus life/health-services/virtual-health-wellness and www.maderamosq.org/.