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Between 1 January and 28 March 2026, 32 confirmed cases of hantavirus infection and eight deaths have been reported. Cases have been reported in the following provinces: Buenos Aires, Salta, Chubut, Río Negro, Entre Ríos and Jujuy. Please see UKHSA guidance for more details on hantavirus.

As of 8 February 2026, 19 cases of hantavirus have been reported in Argentina since the start of the year. This brings the total number of cases reported since July 2025 to 79. The Centro and South regions have been most severely affected. Please see UKHSA guidance for more details on hantavirus.

As of 20 November 2025, 66 cases of hantavirus pulmonary syndrome (including 21 deaths) have been reported in Argentina during 2025. The Central Region has reported 64% of cases. Please see UKHSA guidance for more details on hantavirus.

As of 12 August 2026, a total of 224 locally acquired cases of West Nile virus, with seven deaths (one in an imported case), have now been reported from 55 provinces in 16 regions of Italy during 2026. Please see our Topics in Brief article for further details on West Nile virus.

As of 5 August 2026, 139 locally acquired cases of West Nile virus have been reported in 50 provinces in Italy. Please see our Topics in Brief article for further details on West Nile virus.

As of 29 July 2026, 94 locally acquired cases of West Nile virus have been reported in 30 areas in Italy. Please see our Topics in Brief article for further details on West Nile virus.

As of 17 July 2026, a total of 21 cases of West Nile Virus have been reported in Italy. Please see our Topics in Brief article on West Nile virus.

As of 13 August 2026, 105 cases of locally acquired West Nile virus have been reported in Greece, in 13 areas. Please see our Topics in Brief article for further details on West Nile virus.

As of 29 July 2026, 42 locally acquired cases of West Nile virus have been reported in eight areas in Greece. Please see our Topics in Brief article for further details on West Nile virus.

As of 16 September 2026, a total of 92 locally acquired West Nile virus cases have been reported during 2026. For the first time human West Nile virus cases have been detected in the departments of Aude (Occitanie), Seine-et-Marne (Île-de-France), Drôme (Auvergne-Rhône-Alpes), Loire-Atlantique, Maine-et-Loire (Pays de la Loire), and Loiret (Centre-Val de Loire). Please see our Topics in Brief article for further details on West Nile virus.

As of 6 September 2026, a total of 56 locally acquired West Nile virus cases have now been reported during 2026 in the regions of Auvergne-Rhône-Alpes, Île-de-France, Nouvelle-Aquitaine, Occitanie and Provence-Alpes-Côte d'Azur of mainland France. This is the first time human West Nile virus cases have been detected in the departments of Aude (Occitanie), Seine-et-Marne (Île-de-France) and Drôme (Auvergne-Rhône-Alpes). For six cases, no specific place of infection could be identified. Please see our Topics in Brief article for further details on West Nile virus.

As of 17 August 2026, 18 autochthonous cases of West Nile virus have been recorded across France in the Provence-Alpes-Côte d'Azur region (Bouches-du-Rhône and Vaucluse departments), Occitanie (the departments of Pyrénées-Orientales, Aude, Haute-Garonne, and Gard), and Île-de-France (the departments of Essonne and Seine-St-Denis).

As of 10 August 2026, a total of six locally acquired West Nile virus cases have now been reported during 2026 in the Occitanie (Aude and Pyrénées-Orientales) and Provence-Alpes-Côte d'Azur (Bouches-du-Rhône and Vaucluse) regions of France. Please see our Topics in Brief article for further details on West Nile virus.

As of 27 July 2026, two locally acquired cases of West Nile virus were recorded in Pyrénées-Orientales (Occitanie) and Bouches-du-Rhône (Provence-Alpes-Côte d'Azur). Please see our Topics in Brief article for further details on West Nile virus.

As of October 20 2025, 57 human cases of vector-acquired West Nile virus infection have been identified in 17 departments of mainland France. Cases have been recorded in the Provence-Alpes-Côte d'Azur, Nouvelle-Aquitaine and Occitanie regions, historically affected by the West Nile virus, and in Île-de-France, Auvergne-Rhône-Alpes and Normandy, affected for the first time in 2025. Please see our Topics in Brief article for further details on West Nile virus.

As of 13 October 2025, 48 locally acquired cases of West Nile virus were reported in France during 2025. Cases have been identified from 15 departments in the following regions: Provence Alpes-Côte d'Azur, Occitanie, Nouvelle-Aquitane and for the first time Île-de-France and Auvergne-Rhône-Alpes. Please see our Topics in Brief article for further details on West Nile virus.

As of 15 September 2025, 32 locally acquired cases of West Nile virus were reported in France. Cases have been identified from 10 departments in the following regions: Provence Alpes-Côte d'Azur, Occitanie, and for the first time Île-de-France and Auvergne-Rhône-Alpes. Please see our Topics in Brief article for further details on West Nile virus.

As of 3 September 2025, 20 locally acquired cases of West Nile virus were reported from France. Cases have been reported from Provence Alpes-Côte d'Azur, Occitanie, and for the first time Île-de-France and Auvergne-Rhône-Alpes. Please see our Topics in Brief article for further details on West Nile virus.

As of 19 August 2025, 13 locally acquired cases of West Nile virus were reported from France. Cases have been reported from Provence Alpes-Côte d'Azur, Occitanie, Corsica and for the first time Île-de-France. Please see our Topics in Brief article for further details on West Nile virus.

As of 28 September 2026, 125 locally acquired cases of chikungunya have been identified in France, in Tarn, Lot, Gard (Occitanie), Gironde, Landes (Nouvelle-Aquitaine), Val-de-Marne (Ile-de-France) and Var (Provence-Alpes-Cote d'Azur). Please see our Topics in Brief article for further details on chikungunya.

As of 23 September 2026, 90 autochthonous cases of chikungunya have been identified in France, in Tarn, Lot (Occitanie), Gironde, Landes (Nouvelle-Aquitaine) and Val-de-Marne (Ile-de-France). Please see our Topics in Brief article for further details on chikungunya.

As of 9 September 2026, a total of 57 locally acquired chikungunya cases have been reported during 2026 in Tarn, Lot (Occitanie), Gironde (Nouvelle-Aquitaine) and Val-de-Marne (Île-de-France) in France. Please see our Topics in Brief article for further details on chikungunya.

As of 30 August 2026, a total of 46 locally acquired chikungunya cases have been reported during 2026 in Tarn, Lot (Occitanie), Gironde (Nouvelle-Aquitaine) and Val-de-Marne (Île-de-France) in France. Please see our Topics in Brief article for further details on chikungunya.

As of 26 August 2026, a total of 33 locally acquired chikungunya cases have been reported during 2026 in the Nouvelle-Aquitaine (Gironde), Occitanie (Tarn, Lot) and Île-de-France (Val-de-Marne) regions of France. Please see our Topics in Brief article for further details on chikungunya.

As of 17 August 2026, a total of 25 locally acquired chikungunya cases have been reported during 2026 in the Nouvelle-Aquitaine (Gironde) and Occitanie (Tarn) regions of France. Please see our Topics in Brief article for further details on chikungunya.

As of 10 August 2026, a total of 15 locally acquired chikungunya cases have been reported during 2026 in the Nouvelle-Aquitaine (Gironde) and Occitanie (Tarn) regions of France. Please see our Topics in Brief article for further details on chikungunya.

As of 3 August 2026, seven locally acquired cases of chikungunya have been reported in Tam (Occitanie) and Gironde (Nouvelle-Aquitaine). Please see our Topics in Brief article for further details on chikungunya.

As of 27 July 2026, a locally acquired case of chikungunya has been reported in the Tam region, Occitanie. This is the first locally acquired chikungunya case in mainland France in 2026. Please see our Topics in Brief article for further details on chikungunya.