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Mosquito-control official warns of early West Nile detections, outlines plan to expand sterile‑male releases
Summary
The Sacramento–Yolo Mosquito & Vector Control District briefed the Citrus Heights City Council about early West Nile virus detections in the region, continuing invasive Aedes aegypti risks and plans to expand a sterile insect (SIT) pilot that reduced mosquito abundance about 40% in a small South Natomas area.
The Sacramento–Yolo Mosquito & Vector Control District’s public information officer told the council the district has already detected West Nile virus in mosquitoes and found a positive bird sample this season, earlier than in recent years.
The officer, identifying themself as the district’s public information officer, said surveillance shows both traditional West Nile vectors and an expanding population of Aedes aegypti — an aggressive, day-biting mosquito that can transmit dengue — and described control tools the district uses: surveillance and lab testing, free home inspections, biological controls (mosquito fish), ecological vegetation management, public outreach, and targeted spraying when surveillance indicates risk.
The presenter highlighted a pilot sterile insect technique (SIT) program launched last year in South Natomas that released sterile male Aedes mosquitoes (Wolbachia‑infected) and reported roughly a 40% reduction in target mosquito abundance in the pilot area; the district said it plans to expand SIT to other high‑infestation areas this year, and to continue surveillance and outreach in Citrus Heights.
Council members praised the district’s responsiveness and asked about dog‑heartworm transmission and free yellow‑jacket/wasp services. The district reiterated its free home inspection program and asked residents to report dead birds (the district coordinates with the public health dead‑bird hotline) so staff can set traps and test in a one‑mile radius around a positive find.
The district urged residents to remove standing water in small containers, empty plant saucers, maintain pools, and report dead birds to support surveillance and early control actions.
