Yolo County Reports First West Nile Death Amidst Rising Mosquito Activity

A first death from West Nile virus has been reported in Yolo County this year, health officials announced on Tuesday. The individual who died had contracted the neuroinvasive form of the virus, the most severe manifestation.

This fatality brings the total number of neuroinvasive West Nile virus cases in Yolo County to three for the current year, a significant rise from the single recorded case in 2025. The specific location of exposure for the deceased resident remains unclear.

Health Officer Dr. Joanna Locke emphasized that older adults and individuals with compromised immune systems or certain underlying medical conditions face a higher risk of severe illness. While most infections are asymptomatic or mild, severe neurological symptoms can require hospitalization and be fatal.

Gary Goodman of the Sacramento-Yolo Mosquito & Vector Control District warned that West Nile virus activity is elevated in the region and is expected to remain high. Residents are strongly advised to eliminate standing water around their homes, use insect repellent, and limit outdoor activities during dawn and dusk when mosquitoes are most active. Ensuring window and door screens are in good repair is also recommended to prevent mosquito entry.