Key Points

• 4,463 cases of dengue have been biologically confirmed since March 2019, including 4,277 cases in 2020.

• After several consecutive weeks of decline, the weekly number of confirmed cases, the positivity rate of PCR tests, and indicators from syndromic surveillance have reached relatively low levels.

• However, there is concern that low-level viral circulation may persist during the southern winter, which could lead to an epidemic resurgence toward the end of the year. It is essential to continue vector control efforts.

• Only the DENV-1 serotype is circulating, but the importation of other serotypes from the Indian Ocean region remains a real and ongoing risk.