2020 dengue outbreak in Singapore

In the 2020 dengue outbreak in Singapore, a record-breaking number of dengue fever cases was reported in Singapore. This was part of the wider 2019–2020 dengue fever epidemic which also affected several neighbouring countries in Southeast Asia.

A locally uncommon strain of the dengue virus — one that the local populace would be more susceptible to – had begun to reemerge toward the end of 2019. This contributed to a four-year high in the number of people infected in the first six weeks of 2020, establishing a high baseline for disease incidence even before the onset of the peak dengue season in the middle of the year. There was a steep climb in the rate of infection beginning in May, and by early July the total number of cases for the year was projected to surpass the previous high of 22,170 recorded in the 2013 outbreak. The weekly disease incidence would reach a historic peak of 1,792 new cases during the week of 19–25 July. This surge of infections drove the cumulative number of cases to 22,403 on 5 August 2020, breaking the 2013 record. On 14 October, the number of deaths due to dengue reached 28, surpassing the previous record from the 2005 outbreak.

The year ended with a total of 35,315 dengue fever cases, including 54 instances of dengue haemorrhagic fever, a more severe form of the disease. 32 deaths were attributed to the disease.