Detection of dengue virus serotype 2 in local Aedes aegypti populations, Madeira Island, Portugal, 2025.

ABSTRACT:

Background

Since 2010, dengue virus (DENV) has caused sporadic outbreaks across Europe, namely in Croatia, Spain, France, Italy and the Portuguese island of Madeira. Aedes aegypti mosquito is established in the Autonomous Region of Madeira, and along the eastern Black Sea coast of Cyprus. In Madeira Island, an outbreak of DENV serotype 1 occurred between 2012 and 2013, resulting in 1080 confirmed cases. Despite ongoing entomological surveillance, no further local transmission was detected in the following decade.

Methods

In January 2025, following two suspected dengue cases on Madeira Island, increased entomological surveillance efforts were implemented to confirm a local event transmission of DENV. A network of mosquito traps was complemented by targeted surveillance using

SUBMITTER: Ze-Ze L 

PROVIDER: S-EPMC12917965 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature