Significant increase in dengue fever cases

The National Environment Agency (NEA) has reported a total of 23,267 dengue cases in Singapore this year (as of August 5, 2022). This is a significant increase in the number of cases compared to the 5,258 dengue cases during 2021.

The high number of Aedes aegypti mosquitoes combined with favorable climatic conditions and the spread of the DENV-3 serotype is expected to ensure that the numbers of dengue cases remain high in the coming months.

2020 recorded the largest outbreak to date, with more than 35,000 cases and 32 deaths. In 2022, this number can be exceeded. So far, more than 14,000 cases have been reported, with dengue cases starting earlier than usual in March. Weekly cases could surpass the record 1,800 cases set in 2020 and soon surpass 2,000. The usual high season for dengue fever runs from June to October. Since the dominant strain this year is serotype 3 of Dengue virus (DENV-3), which is rarely observed in Singapore, the immunity of the population among Singaporeans is low.

Dengue fever transmission


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