Dengue Cases Surge in Singapore

As the global number of Dengue cases began to mount in 2025, several countries in the Pacific Region, such as the Republic of Singapore, are reporting weekly increases.

The island country and city-state of Singapore in Southeast Asia has recorded several recent Dengue outbreaks.

As of May 20, 2025, Singapore's National Environment Agency (NEA) wrote, 'Collective community action and vigilance are critical to help prevent a surge in Dengue cases this year.'

NEA reported 104 Dengue cases in the week ending May 17, 2025, 1 case fewer than the previous week.

Furthermore, there are 16 active Dengue clusters, of which there were with red alerts,

Persistent transmission has been noted in the cluster at Hougang Avenue 1 (106 cases). The large clusters at Begonia Drive/Dedap Road (33 cases) and Woodlands Avenue 1/Woodlands Street 31 (30 cases) have relatively fast transmission rates, with an increase of 10 and 12 cases, respectively, from the previous week.   

Among the four Dengue virus serotypes circulating in Singapore, Dengue virus serotype 2 has been predominant in Singapore since September 2023.

Globally, data indicates that over 2.5 million Dengue cases and 1,305 related fatalities have already occurred in 2025, with the U.S. reporting 1,760 travel-related Dengue cases and one local case this year.

While a second-generation Dengue vaccine is available in about 40 countries, it is unavailable in Singapore and the United States in 2025.

The U.S. CDC does recommend various routine and travel vaccinations before visiting Singapore.