Contra Costa Mosquito Control: yellow‑fever mosquito found in Antioch; residents urged to dump standing water
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Summary
Contra Costa Mosquito and Vector Control reported detection of Aedes aegypti (the “yellow fever mosquito”) in Antioch and urged residents to eliminate standing water weekly; the district said it found the species near Lone Tree and Hillcrest and will intensify inspections and outreach.
Antioch — Contra Costa Mosquito and Vector Control told the City Council on May 13 that it detected the non‑native Aedes aegypti mosquito in Antioch last year and again this season and urged residents to remove any standing water weekly to reduce the risk of locally transmitted mosquito‑borne illnesses.
What the agency reported: Nola Woods, public affairs director for the district, explained that Aedes aegypti — commonly called the yellow‑fever mosquito — is a species capable of transmitting dengue, Zika, chikungunya and yellow‑fever viruses. “These mosquitoes can transmit the viruses that cause dengue fever and Zika and yellow fever and chikungunya,” Woods said. She described how the species lays tiny, sticky eggs in items like plant saucers and recommended residents dump standing water once a week.
Where the mosquitoes were found: Woods said district traps and inspections detected the species in an area the district described as roughly between Lone Tree and Hillcrest, south of Highway 4. The district has conducted door‑to‑door inspections in the area and will continue targeted abatement and outreach. She said West Nile–vector mosquitoes also remain a local concern and that residents should eliminate backyard breeding sources.
Public response and council questions: Resident Leslie May asked whether home gardening would attract the mosquitoes; Woods recommended avoiding saucers that retain small amounts of water and said simple cleaning helps. Councilmembers asked about raccoons and other animals (district focuses on vectors covered by its authority) and about the district’s ability to supply mosquito‑eating fish for ponds. Woods said the district will provide direct help, public information and postcards, and recommended residents sign up for district notifications about control operations.
Why it matters: Aedes aegypti can support local transmission of dengue and other viruses if infected people and competent mosquitoes coincide in the same area. The species has spread in parts of California in recent years via eggs caught on potted plants, buckets and other items moved between properties or counties.
Ending: The district urged residents to “dump out any amount of standing water once a week” and said it will continue trapping and notify the public when focused control actions are planned.
