Google is expanding a Singapore lab that breeds mosquitoes, as part of a push to turn dengue control into a problem of robotics, software and industrial-scale production.
The company's decade-old programme targeting mosquito-borne diseases, Debug, is upgrading its Singapore operation into its first international research and development hub and its largest adult mosquito production facility globally.
The expansion comes as governments across Asia look for more durable ways to control dengue, a disease that threatens about 4 billion people globally and has proven difficult to contain through pesticides, inspections and public education alone.
Mosquito control becomes an engineering problem
The work in Singapore centres on Wolbachia, a naturally occurring bacterium used to reduce the ability of mosquitoes to reproduce. Debug breeds male Aedes aegypti mosquitoes carrying Wolbachia and releases them into selected areas. When those males mate with wild females that do not carry the bacterium, the resulting eggs do not hatch. Over time, repeated releases can suppress the local mosquito population.
While the science is established, the harder question is whether it can be done cheaply and reliably enough to work across dense Asian cities.
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That is where Google is trying to make a difference. Debug’s Singapore facility uses robotics, software and computer vision to produce and sort mosquitoes at scale. It now releases more than 10 million male mosquitoes a week in Singapore, up from 6 million in 2024.
One of the most important tasks is also one of the most unforgiving. Debug has to separate male mosquitoes from female mosquitoes before release. Only males are used because they do not bite or transmit disease. At production scale, that turns mosquito sex-sorting into an engineering problem, with accuracy, speed and cost all determining whether the method can be deployed widely.
The expanded Singapore R&D team will work on improving that sorting system, automating more of the larval rearing process and refining release vans designed for Singapore’s high-rise housing estates. Those vans are part of the practical challenge of adapting mosquito releases to a city where much of the population lives in dense public housing blocks.
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Operating like a hotel concierge, the Larval Rearing Robot manages ‘check-in’, ‘room service’ (i.e. feeds bags of larvae) and ‘check- out’ processes. Not only does larvae get checked-in by the Larval Rearing Robot, it also nurtures the larvae development through to pupation, at which point they 'check out' before getting sorted by gender. Photo: Google Debug
Singapore tests a regional model
Singapore has been an important testing ground for the approach. Debug has worked with the National Environment Agency on Project Wolbachia since 2018 and opened its first end-to-end mosquito production facility in the city-state in 2022. NEA trials found that Project Wolbachia achieved 80% to 90% suppression of the Aedes aegypti mosquito population and more than a 70% reduction in dengue cases after six to 12 months of releases.
Since its inception, Debug has released more than one billion male mosquitoes across four continents.
The Singapore expansion also broadens the type of work Debug can conduct in the region. Beyond population suppression, the upgraded facility will support research into population replacement, a different method in which Wolbachia-carrying mosquitoes breed with wild mosquitoes and gradually replace the disease-spreading population. Debug says the model is intended for use in other countries and that the new facility includes a specialised larval rearing unit for that work.
The regional stakes are large. Asia accounts for about 70% of the global dengue burden, while the range of Aedes aegypti is expanding. For governments, the question is not only whether Wolbachia works in controlled trials, but whether it can be produced and delivered at a cost that makes sense for cities with millions of residents.
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As such, automation is central to Debug’s case. Reducing manual labour, increasing yield and improving release precision could determine whether the method remains a specialised intervention or becomes a routine part of dengue control in Southeast Asia.
"When we first launched Debug in Singapore, our goal was to advance mosquito production and releases through technology and bring Debug to more communities in Asia, where 70% of the global dengue burden occurs. Our success in Singapore gives us the confidence to expand. Choosing Singapore as our first international R&D hub underscores our confidence in the nation's deep-tech ecosystem, talents, and its leadership in deploying the Wolbachia method. This new chapter is about accelerating Asian-tailored solutions and scaling our experience to make Debug's end-to-end technology accessible globally,” says Linus Upson, head of Debug.
Ben King, Google Singapore’s managing director, adds: "This expansion of Google's Debug in Singapore is a demonstration of how our technology, talent and leadership can come together to create impactful health outcomes for the community. This is a blueprint that reinforces Singapore's standing as a global lighthouse for health tech."
