Alameda County Mosquito Abatement District

06/16/2026

We are seeing an increase of West Nile virus activity across California, including in Newark and nearby areas. Wearing long sleeves and pants, applying repellent and avoiding mosquitoes when they are most active during dusk and dawn are great ways to avoid West Nile virus.
Learn more at: https://www.mosquitoes.org/west-nile-virus

06/15/2026

The Alameda County Mosquito Abatement District (ACMAD) has detected its first West Nile virus-positive mosquito sample of 2026. The mosquitoes were collected in a trap placed in Newark and tested positive at the District's laboratory on June 12, 2026. This follows the detection of five West Nile virus-positive birds in Newark earlier this season.

In response, ACMAD is continuing enhanced mosquito surveillance and larval control efforts for native Culex mosquitoes in the area where the positive mosquito sample was collected. Staff will treat standing water in the area and check yards for possible sources of Culex mosquitoes. Residents may see ACMAD vehicles and clearly labeled mosquito traps in the area between Christine Street and Cherry Street. A map of all West Nile virus detections in Alameda County is available at mosquitoes.org/west-nile-virus-wnv-activity.

Mosquitoes need standing water to breed. Even small amounts of standing water can become mosquito habitat, especially stagnant water found in outside containers and underneath houses. Unmaintained swimming pools continue to be a significant mosquito source in Alameda County and can produce large numbers of mosquitoes. If you know of an unmaintained swimming pool or other standing water source, please contact ACMAD directly.

https://www.mosquitoes.org/first-west-nile-virus-positive-mosquito-sample-detected-in-alameda-county-in-2026

"Our staff have found and treated potential mosquito habitats in public spaces, parks, roadways and canals" reports Field Operations Supervisor Joseph Huston. "Our next step is to ask residents in the area to check their properties for any possible standing water. We have staff in the area and are happy to help assist with that process."

06/11/2026

West Nile virus has been detected in multiple dead birds in Newark, southeast of Newark Blvd, along with an elevated number of mosquitoes in the area. The Alameda County Mosquito Abatement District (ACMAD) is in the affected areas checking yards for standing water, treating public areas for mosquitoes and educating neighbors about the threat of West Nile virus. Residents can expect to see our staff in uniform along with white trucks with our logo, and we appreciate your cooperation if they ask to check your yard.
Dead birds are often an indicator that West Nile virus is circulating in an area, if you find a dead bird call the California West Nile virus hotline at 1-877-968-2473. If you notice standing water in your area, or are getting mosquito bites, please contact ACMAD directly at www.mosquitoes.org or call 510-783-7744.

Protect yourself from mosquito bites by:
* Dressing in long sleeves and long pants when mosquitoes are most active at dawn and dusk
* Use insect repellent that has been approved by the EPA
* Remove standing water in your yard by draining it completely

06/09/2026

Male mosquitoes do not bite because they don't need to.
They don't need blood so their proboscis (the body part that drinks nectar and juices) cannot easily pierce skin. Thanks guys!

06/08/2026

We are hiring! Our post for a Mosquito Control Technician is live on our website: https://www.mosquitoes.org/employment-and-rfp-opportunities

Deadline for turning in applications is June 26th, 2026.

06/04/2026

Carnivorous plants require water that can sit around for weeks, which mosquitoes love. Learn how to keep your plants healthy without making a home for mosquitoes at the Annual Bay Area Carnivorous Plant Festival in Alameda, Saturday June 13th.

06/03/2026

What is Wolbachia, the bacteria that we can use to reduce mosquitoes? Learn more!

Wolbachia is one tool in the Sterile Insect Technique (SIT) toolbox.

06/02/2026

Noticing crows even though it's almost summer? Crows are year around here. If you see a dead crow or another type of bird, alert the CA West Nile Virus hotline, https://westnile.ca.gov/ to the location and condition of the bird. We may be able to test it for West Nile virus.

05/29/2026

Did you forget a cooler outside after Memorial Day weekend? Find it now and dump it out before mosquitoes find it!

05/29/2026