Portugal: Local transmission of dengue confirmed on Madeira
The Regional Health Directorate (DRS) and the Regional Health Authority (ASR) report on February 18, 2025, two autochthonous cases of dengue that were laboratory confirmed by the National Institute of Health Doutor Ricardo Jorge (INSA) in the Autonomous Region of Madeira (RAM).
The epidemiological investigation, carried out by the ASR, confirms that these cases had symptoms compatible with dengue fever at the beginning of January, and were outside the infectious period, meaning that they no longer pose a risk for the emergence of new infected mosquitoes. It is also reported that the cases refer to two individuals, living in the area where the trap that captured mosquitoes infected with the dengue virus is located, in the third week of January.
The ASR, with the support of the Local Health Authorities of Funchal, has reinforced epidemiological surveillance. At this time, no other suspected cases of dengue have been identified in the RAM.
DRS continues to reinforce entomological surveillance activities and control actions. To date, no presence of dengue virus has been identified in mosquitoes captured since January 27, 2025, according to analytical results from INSA.