Seasonal surveillance of chikungunya virus disease in the EU/EEA – 2026 (weekly)

Since the beginning of 2026, and as at 7 October 2026, two countries in Europe have reported locally acquired cases of chikungunya virus disease: France (146 cases) and Italy (one case). 

Since last week’s update, France has reported 22 new locally acquired chikungunya virus disease cases, bringing the total to 146 cases. These cases are distributed across 20 clusters, with one new cluster identified (municipality of Bellefont-La Rauze, Lot department). Eighteen clusters are currently active, including the largest two clusters in Prayssac (Lot department) and Prignac-et-Marcamps (Gironde department), which respectively consist of 34 and 30 cases.

No new locally acquired chikungunya virus disease cases have been reported by Italy since last week’s update. To date, Italy has reported one locally acquired chikungunya virus disease case in Rome. The associated cluster remains active.

The report is available online.

ECDC will continue to monitor the situation and will publish a weekly report on the occurrence of chikungunya virus disease cases in the EU/EEA until November 2026.