Travel-associated chikungunya cases: place of infection for cases imported into the EU/EEA

The maps and table below show the places where travel-associated CHIKVD cases reported to ECDC were likely to have been infected. The aim is to inform public health authorities in the European Union/European Economic Area (EU/EEA) and their citizens of the risk related to chikungunya virus disease (CHIKVD).

Information about locally-acquired CHIKVD outbreaks in mainland EU/EEA. 
Annual epidemiological reports. 

Distribution of travel-associated CHIKVD cases reported to ECDC, by place of infection, 2022 

Distribution of travel-associated CHIKVD cases reported to ECDC, by place of infection, 2018–2022

About the data

The report is exclusively based on the places of infection linked to confirmed CHIKVD 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 have been reported. 

Data on place of infection were provided at the sub-national level for the EU outermost regions*, while for other places, the data were at 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 at least two confirmed cases which were identified over the past five years (i) in at least two different years or (ii) in at least two different EU/EEA countries. 

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 2018−2022 and therefore do not imply ongoing transmission. Data from 2023 are currently being validated and will be made available by the end of 2024. 

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