Travel-associated dengue cases: place of infection of cases imported to the EU/EEA

The maps and table below show the places where travel-associated dengue cases reported to ECDC were likely to have been infected. The aim is to inform public health authorities and EU/EEA citizens about the risk related to dengue.

Annual epidemiological reports

Distribution of travel-associated dengue cases reported to ECDC, by place of infection, 2023

Distribution of travel-associated dengue cases reported to ECDC, by place of infection, 2019–2023

About the data

The report is exclusively based on the places of infection linked to confirmed dengue cases, reported to ECDC by EU/EEA countries through The European Surveillance System (TESSy), as of June 2024. Only cases diagnosed in the EU/EEA were reported. 

Data on place of infection were provided at the sub-national level for the EU outermost regions*, while for other places, the data are national level. Cases infected in the EU outermost regions were classified as travel-associated and were not included in the national count for France, Portugal or Spain. Locally acquired and travel-associated cases infected within mainland EU/EEA were excluded. 

In this summary, in order to remove outliers, we included the places of infection linked to confirmed cases that were identified over the past five years if they met any of the following criteria:

• they were identified in at least two different years; or
• they were identified in at least two different EU/EEA countries; or
• at least five cases were related to one place of infection. 

The data presented in this summary should be interpreted with caution for the following reasons: 

• the data were included as reported by EU/EEA countries and were not validated by the health authorities at the places of infection;
• this summary does not account for regional disparity within the places of infection, despite some regions having a higher risk of infection than others;
• the data presented only cover the years 2019−2023 and therefore do not imply ongoing transmission. 

*EU outermost regions include Guadeloupe, French Guiana, Réunion, Martinique, Mayotte and Saint-Martin (France), the Azores and Madeira (Portugal), and the Canary Islands (Spain).