Please note that not all cases of disease or outbreaks are reported; some outbreaks may only be reported if they occur outside of the usual recognised risk area or season, or they have been reported in greater than usual numbers. See 'About Outbreaks' tab below for further detail.
For further information on red, amber and green alert categories, see About Outbreaks tab.
North Kivu
South Kivu
Bas-Uele
Tshopo
Haut-Uele
Ebola disease in DRC
As of 6 September 2026, a total of 6,686 confirmed Ebola disease (Bundibugyo virus) cases and 3,226 confirmed deaths have now been reported across six provinces in the Democratic Republic of the Congo: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele and Bas-Uele. Please see our Topics in Brief article for further details on Ebola disease.
Dengue in USA
As of 29 August 2026, 73 cases of locally acquired dengue have been confirmed in Florida, USA. Please see our Topics in Brief article for more details on dengue.
Puglia
Dengue in Italy
As of 30 August 2026, a total of three confirmed locally acquired dengue cases have been reported during 2026 in the Puglia and Tuscany regions of Italy. Please see our Topics in Brief article for further details on dengue.
Lassa fever in Nigeria
As of 23 August 2026, a total of 1,056 confirmed Lassa fever cases, with 7,580 suspected cases, six probable cases and 253 deaths, have been reported across 24 states in Nigeria for 2026. Please see our Topics in Brief article for further details on Lassa fever.
Occitanie
Île-de-France
Chikungunya in France
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.
South Holland
Utrecht
North Holland
West Nile virus in Netherlands
As of 2 September 2026, a total of nine locally acquired West Nile virus cases have now been confirmed in the Netherlands for 2026. These infections occurred in North Brabant, North Holland, South Holland and Utrecht provinces. Please see our Topics in Brief article for further details on West Nile virus.
Dengue in Marshall Islands
As of 24 August 2026, Marshall Island's Ministry of Health and Human Services has reported 17 confirmed dengue cases. DENV-1 has been confirmed in circulation. Please see our Topics in Brief article for further details on dengue.
Dengue in Vanuatu
As of 31 August 2026, a total of 112 confirmed dengue cases have been reported in Vanuatu since 14 June 2026. The outbreak remains active, with ongoing local transmission in affected communities across South-West Efate, Shefa Province. The most affected areas continue to be Erakor (31%), Port Vila (22%), Eratap (21%), and Pango (16%). DENV-1 has been confirmed as the circulating serotype. Please see our Topics in Brief article for further details on dengue.
West Nile virus in USA
As of 1 September 2026, a total of 407 human cases of West Nile virus have been reported across 40 states in the United States. Of these, 285 cases were reported to be the neuroinvasive form. The highest number of cases have been reported in Arizona (88 cases), California (66 cases) and Texas (46 cases). Please see our Topics in Brief article for further details on West Nile virus.
Diphtheria in Italy
On 20 August 2026, a fatal case of diphtheria has been confirmed in a child in Palermo, Sicily. A second probable case has been reported in another child who is unwell and is a contact of the first case. A further ten family members are reported to have tested positive, but remain well. Please see our Topics in Brief article for further details on diphtheria.
Welcome to our outbreak surveillance section. This page contains information on disease outbreaks and other incidents that are considered to be of relevance to UK travellers.
You can search the information by disease or by country.
We regularly review and update information on overseas disease outbreaks and other health issues that may affect the UK traveller. The information comes from a wide variety of sources, and can be used along with the Country Information section of our website where you will find recommendations on vaccines, malaria and other risks for each country (where relevant). Please note that not all cases of disease or outbreaks are reported.
You can search our Outbreak Surveillance information by disease or by country.
In some countries, there may be limited surveillance and reporting processes in place so information can be difficult to obtain. Some diseases may only be reported if they occur outside of the usual recognised risk area or season, or they have been reported in greater than usual numbers. Outbreaks of those diseases included in the UK childhood vaccination programme are not usually reported unless the outbreak is unusual or unexpected.
If you wish to use the following content for official purposes, please refer to the original sources of information. The information presented in the disease surveillance reports is collated from a variety of sources, including government bodies, international organisations and the media. The verification status of each report is clearly indicated. Verified reports are confirmed by official sources. Some unverified reports are included to ensure timely dissemination of information and where possible we will try to substantiate these reports, although confirmation may not always be possible. Unverified reports may be subject to change, misreporting and may later prove to be unsubstantiated. They should not therefore be regarded as official.
Where available, a web link is provided to the original information source. We cannot accept responsibility for the sites to which it links, or for the information found on those sites. Linking to outside sites does not in any way imply endorsement of these sites.
Key to NaTHNaC alert level feature
LEVEL 1: GREEN |
Take usual precautions
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Follow standard protective measures, as recommended for this destination, disease or situation. Be aware that advice may change and check for updates. |
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LEVEL 2: AMBER |
Take extra precautions
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Follow any additional precautions recommended. Be alert and check regularly for changes in advice about this ongoing situation. Advice may be relevant for all travellers or apply to a specific group of travellers. |
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LEVEL 3: RED |
FCDO advise against travel
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The Foreign, Commonwealth & Development Office (FCDO) advise against travel on health grounds. Please note we do not report on FCDO specific travel advice where the FCDO advises British people against ‘all but essential travel’ or ‘all travel’ to a particular country. For changes to travel advice for a specific country, you can sign up to receive email alerts. |
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Alert categories are based on the situation at the time of publication. They will not be routinely updated unless outbreak information or a news item is updated.
The categories do not replace Foreign, Commonwealth and Development Office (FCDO) travel advice. Travellers should still check the FCDO travel advisories for any country-specific security or safety alerts.
