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Placer Mosquito & Vector Control presents countywide season update and advice for Loomis residents
Summary
Placer Mosquito & Vector Control briefed the council on West Nile activity, invasive Aedes mosquitoes and local response plans; the agency urged residents to remove standing water, report dead birds and follow personal protective steps against daytime and nighttime biting insects.
A Placer Mosquito & Vector Control representative reviewed 2025 season activity, public‑health risks and the district’s surveillance and response strategy. Placer County staff said they set weekly traps, test for West Nile virus and other pathogens, and deploy larvicides, adulticides and biological control when traps or bird testing indicate elevated risk.
In 2025 staff reported early detections across the county and active West Nile virus surveillance; they said Loomis typically sees West Nile activity later in the season but urged residents to report dead birds and eliminate standing water immediately. The district also reviewed an expanding presence of invasive Aedes species in parts of Placer County. Those mosquitoes bite during the day and can transmit dengue, chikungunya and Zika if the virus is present locally.
The district recommended common prevention measures: dump standing water in pots and gutters, use mosquito repellent during morning and evening periods and keep screens in good repair. The district also described services it provides on request—including inspections, targeted larval control, yellow‑jacket nest treatments and distribution of mosquito fish for troughs—and offered an online portal for reporting dead birds and service requests. Placer Mosquito staff said they will continue aerial and ground treatments in areas that show high vector indices and will post notices when treatments occur.
No council action was requested; staff thanked the district for the update and encouraged residents to use the district’s website to report sightings and request inspections.
