ECDC publishes threat assessment brief on dengue epidemic in Réunion

11 May 2021

Article: 55/1904

The European Centre for Disease Prevention and Control (ECDC) has published a threat assessment brief concerning the risk related to dengue for EU and EEA citizens travelling to or residing in Réunion, a French overseas department in the Indian Ocean. The assessment also considers the risk related to having an outbreak of dengue in mainland EU and EEA countries, following the introduction of the virus from Réunion.

In 2019, Réunion experienced an unusually large dengue epidemic, which was followed in 2020 by a second epidemic on a similar scale. Currently, Réunion is once again facing a large dengue epidemic, which is likely to be comparable in size to that of the preceding two years. The epidemic peak is expected to be reached in the coming weeks.

The risk related to dengue for EU and EEA citizens travelling to or residing in Réunion is currently high if they do not apply protective measures, while the risk of a dengue outbreak in mainland EU and EEA countries is currently assessed as low, with environmental conditions unfavourable to vector activity and virus replication. These conditions are expected to become more favourable in coming months, with high vector abundance expected from early summer through early autumn in mainland EU and EEA countries.

Information and advice on dengue is available from the TRAVAX (for health professionals) and fitfortravel (for the general public) websites.

Source: ECDC, 5 May 2021