Singapore has recorded its highest weekly dengue case count so far in 2026, with 1,200 infections reported in the week ending May 23, according to the National Environment Agency (NEA). This marks a significant increase from the previous week's 500 cases, as the city-state enters its annual peak dengue season from May to October.
The NEA has identified 150 active dengue clusters, with the largest in the eastern region of Bedok. The predominant dengue virus serotype is DENV-3, which has been less common in recent years, raising concerns about lower population immunity.
Authorities have stepped up vector control measures, including indoor and outdoor fogging, and urged residents to remove stagnant water sources. The Aedes aegypti mosquito, which breeds in clean water, is the primary vector.
As of May 27, 2026, the total number of dengue cases this year stands at 8,500, compared to 12,000 for the whole of 2025. The NEA warns that cases could rise further if preventive measures are not strictly followed.
