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Orange County vector control warns Costa Mesa to prepare for increased mosquito activity and dengue risk in 2025
Summary
The Orange County Mosquito and Vector Control District updated the City Council on 2024 local activity, wetland management at Fairview Park, and a pilot sterile insect technique; staff urged residents to reduce standing water and sign up for outreach.
Laura Young, general manager of the Orange County Mosquito and Vector Control District, told the Costa Mesa City Council on Jan. 21 that the district saw low West Nile activity in 2024 but expects more mosquito and disease activity in 2025.
“Last year was a very mild West Nile virus year,” Young said, adding that Costa Mesa had no positive mosquito pools and no human West Nile cases in 2024. She noted there was one West Nile human case in the county (Huntington Beach) and that California saw repeated local dengue transmission in 2024 in neighboring counties. “For dengue, it’s not a question of when we will get local transmission. It’s not a question of if we will get it. It’s when,” Young said.
The district provided a short local summary…
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