West Nile Virus Cases Rise in California, Mosquito Control Efforts Intensified

Fresno Visalia, CA, September 25, 2026 —

West Nile virus (WNV) is showing an increase in cases across California. The San Joaquin Valley region has been identified as a particular hotspot, with Kings County reporting some of the state’s highest infection rates.

In response to the rising numbers, local mosquito abatement districts have ramped up their efforts. These districts are actively conducting insecticide spraying operations throughout affected areas. The primary goals of these spraying campaigns are to combat the existing mosquito populations and to prevent further breeding of mosquitoes, which are the primary vectors for the virus.

Public health officials are underscoring the importance of community involvement and individual protective measures as a crucial part of the strategy to mitigate the spread of West Nile virus. While specific details regarding the total number of cases, the exact timeline of the increase, or the specific types of insecticides being used were not provided, the emphasis remains on proactive control and prevention.

Residents are advised to take personal precautions. These measures typically include wearing protective clothing, using insect repellent, and avoiding outdoor activities during dawn and dusk when mosquitoes are most active. Eliminating standing water around homes is also a key step in preventing mosquito breeding grounds. The contractor’s name and the specific outcomes of any recent inspections were not detailed in the provided information. The exact fine amounts, if any, were also not specified.

Story summarized from the original created by Samantha Rangel on www.kvpr.org, see more information here.

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