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Mosquito control district urges year‑round prevention as Monterey Park remains a West Nile hotspot
Summary
San Gabriel Valley Mosquito & Vector Control District briefed the council on surveillance‑driven mosquito control, the district's larval‑first strategy, and community notifications; staff said Monterey Park historically registers annual West Nile detections but no treatments were scheduled at the time of the presentation.
Anais Medina Diaz, director of communications for the San Gabriel Valley Mosquito and Vector Control District, told the council the district uses surveillance data and targeted larval control to protect public health. "Our mission is very simple, to protect the community from mosquitoes and other vectors that can spread disease," Diaz said, describing trap sampling, insect identification and disease testing as the evidence base for treatments.
Diaz explained that treatments are data‑triggered and conducted at night to maximize effectiveness and minimize impacts on beneficial insects. She noted Monterey Park sees West Nile virus each year but said "right now, we don't have any scheduled treatments" and described notification procedures the district follows when detections occur, including press releases and posted signs. Joseph Leon, the city's representative to the district's board, added that prior detections affected small, localized sections of the city and that only residents in an affected area receive treatment notices.
Council members asked about cross‑jurisdiction coordination, school outreach and education resources. Diaz said the district maintains an MOU with neighboring vector districts, conducts K–12 education with NGSS‑aligned curriculum and offers property consultations and mosquito fish at no charge. She also described longer‑term strategies under consideration for invasive Aedes species, including sterile insect technique, which releases sterilized male mosquitoes to reduce populations over time.
The presentation concluded with staff and council thanking the district for its outreach and reaffirming the city's commitment to share timely treatment notices with residents.
