Singapore reported over 600 dengue cases from January to May 15, 2026, marking a 66 percent decrease compared with the same period last year [1, 2]. The city-state entered its traditional peak dengue season from May to October, when warmer temperatures accelerate mosquito breeding and virus replication, increasing outbreak risks [1, 2].
Senior Minister of State Janil Puthucheary urged the public not to become complacent, saying, "The current dengue situation here in Singapore today is relatively stable, but we cannot let that success or that stability lump us into complacency. We cannot be complacent" [1, 2]. The National Environment Agency (NEA) launched its 2026 annual national dengue prevention campaign on May 16 to raise public awareness and control efforts [1, 2].
Dengue cases in 2025 totaled over 4,000, the lowest annual total since 2018 [1, 2]. That year, NEA conducted 565,730 mosquito inspections and found 20,469 breeding habitats [2]. About 65 percent of Aedes mosquito breeding sites in dengue cluster areas were located in homes, while 23 percent were in public areas, 4 percent at construction sites, and 8 percent on other premises [2]. NEA took more than 9,800 enforcement actions in 2025 related to mosquito breeding and issued 810 fines and 37 stop-work orders [2].
Singapore’s tropical climate, combined with low population immunity and the circulation of all four dengue virus serotypes, keeps the risk of transmission ongoing [1]. Climate change effects, including rising temperatures and unpredictable rainfall, also influence dengue spread dynamics [1]. There has been one dengue-related death so far in 2026, compared with the highest annual toll of 32 deaths recorded in 2020 [2].
The NEA’s prevention campaign will run through the May to October peak season, as authorities intensify efforts to reduce mosquito breeding habitats and monitor dengue clusters [1, 2].
