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Ebola, Marburg and Oropouche outbreaks

Ebola cases continue to be reported in Democratic Republic of Congo. A case of Marburg virus disease has been reported in Uganda and a multi-country outbreak of Oropouche is ongoing. Keep up to date with the news and outbreak information if you are travelling to affected areas.

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24 August 2026
Australia + South Australia

Influenza A(H5) in Australia

On 23 August 2026, the Australian Centre for Disease Preparedness confirmed the detection of H5 high pathogenicity bird flu (avian influenza) in a long-nosed fur seal found at Beachport in South Australia. This is the first detection of avian influenza A(H5) in a mammal in Australia. Please see our Topics in Brief article for further details on avian influenza.

Take usual precautions
24 August 2026
France + Nouvelle-Aquitaine
Occitanie

Chikungunya in France

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.

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21 August 2026
Niger + Zinder

cVDPV3 in Niger

In the week ending 21 August 2026, one case of circulating vaccine derived poliovirus type 3 (cVDPV3) was reported from Niger, with onset of paralysis on 28 June 2026. Please see our Topics in Brief article for further details on polio.

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21 August 2026
Austria + Linz

Legionnaires' disease in Austria

As of 20 August 2026, 26 cases and three associated deaths from Legionnaires' disease have been reported from Linz, Austria. The source of infection is not yet known.

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21 August 2026
Democratic Republic of the Congo + Ituri
North Kivu
South Kivu
Bas-Uele
Tshopo
Haut-Uele

Ebola disease in DRC

As of 19 August 2026, a total of 5,290 confirmed Ebola disease (Bundibugyo virus) cases, and 2,516 deaths, have now been reported across six provinces: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele and Bas-Uele. Please see our Topics in Brief article for further details on Ebola disease.

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21 August 2026
USA + Florida

Dengue in USA

As of 15 August 2026, a total of 23 locally acquired cases of dengue have been confirmed in Florida during 2026. Serotypes DENV-2 (20) and DENV-3 (2) have been confirmed. Please see our Topics in Brief article for further details on dengue.

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20 August 2026

Tick-borne encephalitis in United Kingdom

As of 17 August 2026, there have been ten locally acquired cases, three confirmed and seven probable, of tick-borne encephalitis in the UK. Regions where confirmed and probable cases have been reported are Devon, Hampshire, Outer Hebrides, Scottish Highlands and Yorkshire. The risk is very low for the general population and low for high risk groups (such as those living, working or visiting affected areas, as determined by duration of time spent outside). Please see our Topics in Brief article for further details on tick-borne encephalitis.

Take usual precautions
20 August 2026
France + Occitanie
Île-de-France
Provence Alpes-Côte d’Azur

West Nile virus in France

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).

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20 August 2026
France + Nouvelle-Aquitaine
Occitanie

Dengue in France

As of 17 August 2026, four locally acquired cases of dengue have been reported in the Tarn and Herault (both in Occitanie), and Dordogne (Nouvelle-Aquitaine) regions in France. Please see our Topics in Brief article for further details on dengue.

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20 August 2026

West Nile virus in Greece

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.

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