Google is seeking permission from US regulators to release up to 32 million sterilized mosquitoes across California and Florida as part of an effort to reduce populations of disease-carrying insects responsible for spreading illnesses such as dengue, Zika, chikungunya, West Nile virus, and malaria.
According to a notice in the Federal Register, the US Environmental Protection Agency (EPA) is reviewing the company’s request for an experimental use permit that would allow the release of up to 16 million mosquitoes annually over a two-year period.
The agency is expected to make a decision after a public comment period that runs through June 5.
The initiative is part of Google’s Debug program, which combines technology, data science, and biological control methods to target mosquito populations without relying on traditional pesticides.
The program focuses on releasing male mosquitoes that carry a naturally occurring bacterium called Wolbachia. Male mosquitoes do not bite humans and cannot transmit diseases.
When Wolbachia-infected males mate with wild female mosquitoes, the eggs produced fail to hatch, preventing future generations from emerging. Over time, repeated releases can significantly reduce local mosquito populations.
Google explained the mechanism behind the approach in a blog post, stating: “the population gets smaller with each generation.”
The strategy targets Aedes aegypti, a mosquito species responsible for transmitting the majority of dengue, Zika, yellow fever, and chikungunya cases worldwide.
The company argues that existing mosquito-control methods have limitations. Chemical pesticides can become less effective over time as insects develop resistance, while identifying and eliminating all breeding sites can be challenging, especially in urban environments.
While releasing sterilized insects may sound like an unconventional project for a technology company, Google’s involvement stems from years of research through the Debug initiative.
The program was originally developed under Verily Health, Alphabet’s health and life sciences division that began as a “moonshot” project within Google X. Earlier this year, Google fully acquired Debug from Verily, bringing the mosquito-control effort directly under the company’s umbrella.
Engineers and scientists involved in the project are using automation, sensors, and data analytics to scale mosquito production. One of the key challenges is separating male mosquitoes from females before release.
To address this, the team employs AI-powered computer vision systems capable of identifying and sorting the insects with high precision.
Google says the technology helps ensure only males are released and that deployments occur “in the right place and in the right numbers”.
The company has also developed automated rearing systems designed to handle the delicate insects on a large scale.
Although Google’s use of technology is modern, the underlying concept is not new.
The company’s approach is based on the sterile insect technique, a scientific method that has been used for decades to control agricultural pests and disease-carrying insects. Researchers have increasingly adopted Wolbachia-based mosquito sterilization programs in recent years.
For now, the fate of the project rests with regulators as the EPA completes its review and gathers public feedback on the proposed mosquito releases.