Sacramento-Yolo Releases 144,000 Sterile Mosquitoes Weekly in Rosemont to Curb Aedes aegypti
Updated
Updated · KCRA Sacramento · Jul 8
Sacramento-Yolo Releases 144,000 Sterile Mosquitoes Weekly in Rosemont to Curb Aedes aegypti
2 articles · Updated · KCRA Sacramento · Jul 8
Summary
Rosemont will receive 144,000 sterile male mosquitoes each week through the end of October under Sacramento-Yolo’s expanded control program.
The males do not bite; they mate with invasive Aedes aegypti females, causing eggs not to hatch and gradually shrinking the population.
District officials say the goal is to cut the risk of local dengue and other mosquito-borne disease outbreaks as the invasive species spreads.
The sterile insect technique began in South Natomas in 2025 and was extended to Rosemont after officials reported promising early results.
Staff will also set traps and monitor mosquito activity, using the Rosemont rollout to test whether the approach can protect more Sacramento-area communities.