Singapore's National Environment Agency (NEA) has launched a dengue prevention campaign as the country enters its traditional peak dengue season from May to October. This year, as of May 15, over 600 dengue cases have been reported, a 66% decrease compared to the same period last year. This reduction is significant, with 2025 seeing the lowest annual total since 2018, and a 70% drop from 2024's 13,651 cases. The NEA attributes this success to the mid-year surge being largely subdued due to strong community vigilance and mosquito suppression efforts under Project Wolbachia.
However, the NEA's Senior Minister of State for Sustainability and the Environment, Janil Puthucheary, warns against complacency. He emphasizes that the current dengue situation is relatively stable, but the traditional peak season from May to October can accelerate mosquito breeding cycles and virus replication, leading to faster outbreaks. Puthucheary stresses the importance of early action, investing in technology, and community engagement to stay ahead of the virus and protect communities.
The NEA highlights several risk factors, including Singapore's role as an international transport hub, low population immunity, and the circulation of all four dengue virus serotypes. The tropical climate and high population density create ideal conditions for mosquitoes to thrive year-round, with warmer temperatures seeing accelerated mosquito development and virus multiplication. Climate change and shifting weather patterns are expected to exacerbate the situation, both globally and locally.
In 2025, the NEA conducted approximately 565,730 mosquito inspections and detected around 20,469 breeding habitats. In dengue cluster areas, about 65% of Aedes mosquito breeding sites were found in homes, followed by 23% in public areas, 4% in construction sites, and 8% in other premises. The NEA took over 9,800 enforcement actions against owners and occupiers of premises for mosquito breeding, issuing fines and stop work orders to construction sites. Project Wolbachia, which releases male Wolbachia-carrying Aedes mosquitoes to mate with females, aims to cover over 800,000 households by the end of the year, significantly reducing dengue risk.
Despite the success of Project Wolbachia, Puthucheary stresses that it complements, not replaces, traditional efforts to target dengue at its source. He emphasizes the importance of removing stagnant water as the most direct and effective way to prevent mosquitoes from breeding. This holistic approach, combining technology, community action, and environmental awareness, is crucial in maintaining Singapore's progress in dengue prevention and ensuring the well-being of its residents and the wider community.
