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Greater LA County Vector Control briefs Gardena council on mosquito surveillance, sterile‑insect technique and reporting pools
Summary
A Greater LA County Vector Control District representative described local mosquito surveillance, disease activity in 2024, and a pilot 'sterile insect technique' (SIT). Council members asked about ecosystem impacts and homeowner actions for pools.
Caroline Gongora, public information coordinator for the Greater Los Angeles County Vector Control District, briefed the council on district services and programs that affect Gardena residents. She said the district covers a large portion of LA County and that district services are funded by property and special assessment taxes; the current cost she cited was $18.97 per single‑family home per year.
Gongora noted two mosquito-borne diseases of local concern: dengue fever and West Nile virus. In 2024 the district recorded 140 travel‑associated dengue cases in its service area and 14 locally acquired dengue cases in Los Angeles County, three of which were within the district’s service area. West Nile virus remains endemic and the district monitors mosquitoes, dead birds and human cases each year.
Gongora described an integrated approach using surveillance, control and education; the district inspected more than 2,300 potential mosquito sources in Gardena in 2024 and performs seasonal inspections of pools, gutters, and storm drains. She highlighted an experimental sterile insect technique (SIT) in which male mosquitoes are sterilized by X‑ray and released; those sterile males mate with wild females and the eggs do not hatch, reducing local mosquito populations over time. She described SIT as nonchemical and eco‑friendly.
Council member Henderson asked whether reducing mosquito populations via SIT could disrupt local ecosystems. Gongora responded that mosquitoes play limited roles as pollinators and as aquatic-stage food sources, and that eliminating them would likely cause little ecological disruption. Council member Francis asked what homeowners could do about swimming pools; Gongora advised keeping pool water clear and circulating, and encouraged residents to report neglected or green pools to the district, which responds to anonymous reports and can inspect properties.
Gongora urged continued collaboration between the city and the district on outreach and public education.
