Burden of Dengue amidst the COVID-19 Pandemic

Dengue fever (DF) is endemic in many tropical countries, including Singapore, and is spread by Aedes mosquitoes. All four serotypes of the dengue virus (DENV 1–4) are found in Singapore, with serotype distribution fluctuating from year to year. DENV-1 and DENV-2 were previously the dominant serotypes in outbreaks, but DENV-3 has now replaced DENV-2 as the most common serotype in 2022. Along with a larger proportion of people staying home due to the COVID-19 pandemic, this has resulted in an increase in dengue incidence in Singapore. In the week of 12th to 18th June 2022, 1,258 new dengue cases were reported. According to the National Environment Agency (NEA), this number is expected to rise and exceed the highest weekly figure of 1,787 cases recorded in 2020.