Overview
Since the beginning of 2026, and as at 23 September 2026, two countries in Europe have reported locally acquired cases of dengue: Italy (47 cases) and France (5 cases).
Since last week’s update, Italy has reported 10 new locally acquired dengue cases. The cumulative number of locally acquired cases in Italy is 47, distributed across seven clusters, four of which are newly identified: three in the Firenze NUTS 3 region (Campi Bisenzio, Signa and Sesto Fiorentino) and one in the Napoli NUTS 3 region (Ischia). All clusters are currently active.
No new locally acquired dengue cases have been reported by France since last week’s update. The cumulative number of locally acquired cases in France remains five, distributed across four clusters. No clusters are currently active.
The report is available online.
ECDC assessment
The current dengue risk assessment for mainland EU/EEA is available on ECDC’s dedicated dengue webpage.