Google's Debug initiative has asked the U.S. Environmental Protection Agency for permission to release up to 32 million specially treated male mosquitoes in Florida over two years, with a similar request pending for California. The public has until June 5, 2026, to comment on the proposal, which aims to curb mosquito-borne diseases like West Nile virus.
Why Wolbachia-treated mosquitoes?
The mosquitoes are male Culex quinquefasciatus carrying Wolbachia pipientis wAlbB bacteria. When these males mate with wild females, the bacteria prevents eggs from hatching, reducing the local mosquito population over time. Only males are released — they don't bite or spread disease.
Debug plans to release 16 million mosquitoes per year in Florida, and another 16 million annually in California under the same EPA application. The agency is reviewing Wolbachia as a biological control method under federal pesticide law.
How the technology works
Debug uses artificial intelligence and automation to sort male from female mosquitoes and rear them at scale. The process is designed to produce only sterile males for release, avoiding any risk of increasing the biting female population.
The goal of the Florida test is to gather field data needed for a possible future product registration. That data would help regulators and public health agencies decide whether to deploy the method more broadly against West Nile virus and other mosquito-borne illnesses.
Track record in Singapore
Debug has been working with Singapore's National Environment Agency on Project Wolbachia since 2018. In treated areas, the program achieved 80-90% suppression of Aedes aegypti mosquitoes and reduced dengue risk by more than 70%.
Debug now releases more than 10 million male Wolbachia mosquitoes each week in Singapore alone. That real-world success is the basis for the U.S. proposals, though the Florida and California releases target a different mosquito species — Culex quinquefasciatus, which transmits West Nile virus and other diseases.
Public input and next steps
The EPA will accept public comments on the Florida and California applications through June 5, 2026. After that, the agency will decide whether to approve the releases under federal pesticide regulations.
If approved, the Florida release would be the first large-scale field test of Debug's technology in the U.S. The results could determine whether Wolbachia-treated mosquitoes become a regular tool for mosquito control agencies fighting West Nile virus and other pathogens.
