2025 Press Release Archive

District Transparency Certificate of Excellence and Certificate of Achievement for Excellence in Financial Reporting (GFOA).

Alameda County Mosquito Abatement District Receives Two Awards for Financial Transparency

HAYWARD,CA January 29, 2025 - For the third year in a row, the Alameda County Mosquito Abatement District was awarded the Special District Leadership Foundation’s District Transparency Certificate of Excellence and the Government Finance Officers Association of the United States and Canada’s Certificate of Achievement for Excellence in Financial Reporting. Both awards require years of…

The image illustrates the West Nile Virus (WNV) transmission cycle between birds, mosquitoes, and its spread to humans and animals.

First West Nile virus positive bird in 2025 found in Alameda County

HAYWARD,CA March 20, 2025

A mosquito feeding on human skin, abdomen swelling with blood.

The Alameda County Mosquito Abatement District Steps Up Efforts After Aedes aegypti Larva Detected

HAYWARD, CA August 4, 2025– The Alameda County Mosquito Abatement District discovered an Aedes aegypti mosquito larva in a trap placed in the Alameda County Fairgrounds in Pleasanton. This mosquito is not native to California and can spread diseases such as dengue, Zika, and yellow fever. The District is inspecting and treating all known mosquito breeding sites in the area and conducting intensive…

Close-up of a mosquito biting human skin.

Alameda County Mosquito Abatement District Confirms First Detection of Invasive Aedes aegypti Mosquitoes in Livermore

HAYWARD, CA August 11, 2025 — The Alameda County Mosquito Abatement District has confirmed the discovery of two adult Aedes aegypti mosquitoes in Livermore on August 8th. This marks the first detection of the invasive species in the city. The District is working with city officials and volunteer groups to inform residents and inspect properties.

Larval treatment for Aedes aegypti scheduled for Sept 5th in Altamont Creek neighborhood of Livermore

HAYWARD, Calif.- On August 27, an invasive mosquito, Aedes aegypti, was detected in the Altamont Creek neighborhood of northeastern Livermore. After inspecting properties in the area, District staff will apply a mosquito-specific larval treatment on September 5th to prevent additional adults from emerging.

Close-up of a mosquito on a yellow surface.

New detection of multiple Aedes aegypti mosquitoes prompt larval treatment on September 26th in Jensen and Windmill Springs neighborhoods.

September 25, 2025.

Close-up of Aedes aegypti mosquito on a finger; text notes its presence in Alameda County.

ACMAD encourages Alameda County residents to avoid invasive Aedes aegypti mosquitoes by preventing them at home

October 3, 2025

Close-up of a mosquito on a green surface, showcasing its detailed features.

Multiple Detections of Invasive Mosquitoes in Alameda County Demand Immediate Action from Residents

October 6th, 2025

A close-up of a mosquito on a green surface.

First Detection of the Invasive Aedes aegypti Mosquito in Dublin

HAYWARD, Calif. October 20, 2025 — The Alameda County Mosquito Abatement District has confirmed the discovery of one adult Aedes aegypti mosquito in Dublin in 2025. This marks the first detection of the invasive species in the city. The District is working with city officials and agencies to inform residents and inspect properties.