News Release

For Immediate Release — Thursday, October 2, 2025


Contact: Nola Woods, Public Affairs Director


Direct: 925-771-6158


Cell: 925-250-6502


Email: nwoods@contracostamosquito.com


MORE AEDES AEGYPTI FOUND IN ANTIOCH


It's More Important Than Ever That Antioch Residents Work With the District to Stop This Dangerous Mosquito

CONCORD, CALIFORNIA - The Contra Costa Mosquito and Vector Control District (District) confirms more Aedes aegypti mosquitoes have been detected in Antioch, in the area between Lone Tree Way and Hillcrest Avenue. And with this week's rain, filling up containers and leaving areas of standing water throughout Contra Costa County, it's more important than ever that Antioch residents take steps to reduce the places where these dangerous mosquitoes can lay their eggs and grow.


"We have been collecting these mosquitoes in our traps in Antioch since May, and this week, we collected more. That's why we need residents to be aware that this week's rain can provide mosquitoes with more places to develop from egg to adult, so it's imperative that residents dump out any rainwater that has collected in their yards," said Steve Schutz, Ph.D., Scientific Programs Manager.


In response to the latest detection of Aedes aegypti, the District is considering conducting a Wide-Area Larviciding event as soon as next week.

To reduce the risk of mosquitoes on their own properties, the District encourages Contra Costa County residents to dump out any amount of standing water at least once every week. And if, after dumping out all of the water on the property, the resident still experiences mosquito issues, Contra Costa County residents should contact the District to request mosquito service.


To reduce the risk of mosquito bites, the District encourages residents to use EPA-registered insect repellents with one of the following active ingredients:

  • DEET
  • Picaridin
  • The repellent version of Oil of Lemon Eucalyptus
  • IR3535


Always follow the instructions on the label when using an insect repellent.


County residents can also request mosquito service for residential property by calling (925) 685-9301 or online

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Contra Costa Mosquito & Vector Control District
925-685-9301