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Vector control outlines mosquito 'sterile insect technique' pilot for Mission Viejo
Summary
The Orange County Mosquito and Vector Control District briefed the Council on an SIT pilot targeting Aedes aegypti in a roughly 100‑acre area of Mission Viejo, with plans to begin scaled releases (more than 100,000 sterile male mosquitoes per week) in late May as part of a 2025–27 project aimed at suppressing local populations and reducing disease risk.
The Orange County Mosquito and Vector Control District updated the Council on progress toward expanded releases of sterilized male Aedes aegypti as part of a sterile insect technique (SIT) pilot in Mission Viejo.
Amber (Vector representative, speaker 9) told the Council the program raises local mosquitoes in district labs, separates males and females, irradiates the males with X‑ray technology to render them sterile, marks them and releases them at a ratio designed to outcompete wild males so resulting eggs are infertile. The District said the approach is environmentally targeted and…
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