Seasonal surveillance of dengue in the EU/EEA – 2026 (weekly report)

Since the beginning of 2026 and as at 28 October 2026, two countries in Europe have reported locally acquired cases of dengue: Italy (76 cases) and France (eight cases).

Since last week’s update, Italy has reported three new locally acquired dengue cases. The cumulative number of locally acquired cases in Italy is 76, distributed across seven clusters. No new clusters have been identified this week. Six of the clusters are currently active, and the cluster ‘Garbagnate Milanese’ in Milano region is now closed.

One new locally acquired case has been reported by France since last week’s update. The cumulative number of locally acquired cases in France is eight, distributed across five clusters, one of which is active, in the municipality of La Farlède, Var department.

The latest weekly seasonal surveillance report showing geographical areas with locally acquired cases is available online.

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