Dengue is endemic in Timor-Leste throughout the year, but the peak of transmission occurs during the rainy season.
The municipality of Dili reported 6,234 cases between 2018 and 2022, with an average annual incidence rate of 330 cases per 100,000 inhabitants. There were 55 deaths (case fatality rate of 0.9%). The peak annual incidence (3,904 cases) occurred in 2022 after an outbreak was declared in January of that year; this outbreak included 760 cases of hemorrhagic dengue and 35 deaths. The number of outbreak cases requiring hospital treatment exceeded the usual capacity, but facilities established for the isolation and treatment of coronavirus disease 2019 (COVID-19) were repurposed to meet this demand.
Epidemic curve of dengue virus infection cases notified in Dili, Timor-Leste, between 1 January 2018 and 31 December 2022.
