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.

To view all outbreak updates for a thread, press on the blue circled number below an outbreak post.

21 February 2025

Dengue in Puerto Rico

As of 20 February 2025, a total of 6,291 dengue cases were reported in Puerto Rico for 2024. Cases remained above epidemic threshold in 2024, with active transmission also remaining above epidemic threshold through January 2025. DENV-1, DENV-2 and DENV-3 subtypes were identified; with DENV-3 the predominant circulating subtype, followed by DENV-1. Please see our Topics in Brief article for further details on dengue.

Take usual precautions
21 February 2025

Dengue in Tonga

As of 20 February 2025, the Ministry of Health of Tonga declared an outbreak of dengue fever, with a total of 52 cases reported in Vava’u, Tongatapu and ‘Eua. Please see our Topics in Brief article for further details on dengue.

Take usual precautions
21 February 2025

West Nile Virus in Estonia

As of 20 February 2025, the first confirmed case of West Nile virus infection in Estonia was reported in a dead bird (northern goshawk). This is currently the northernmost West Nile virus detection in Europe. Please see our Topics in Brief article for further details on West Nile virus.

Take usual precautions
20 February 2025

Mpox in South Sudan

As of 16 February 2025, a total of three confirmed mpox cases have been reported in South Sudan. Mpox clade Ia has been reported. Please see our Topics in Brief article for more details about mpox.

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Take extra precautions
19 February 2025

Cholera in Ghana

As of 14 February 2025, a total of 6290 cholera cases, with 49 deaths, have been reported since October 2024. Cases have been reported across 118 districts in five of the country’s 16 regions, with 98% occurring in Central (1625 cases), Western (2225) and Greater Accra (1340) regions. Please see our Topics in Brief article for further details on cholera.

Take usual precautions
19 February 2025

Lassa fever in Sierra Leone

As of 18 February 2025, a confirmed fatal case of Lassa fever has been reported in Sierra Leone.  Please see our Topics in Brief article for further details on Lassa fever.

Take usual precautions
17 February 2025
Colombia + Tolima

Yellow fever in Colombia

As of 14 February 2025, a total of eight confirmed cases of yellow fever, with two deaths have been reported in the department of Tolima since the beginning of 2025. Please see our Topics in Brief article for further details on yellow fever.

Take usual precautions
14 February 2025

Mpox in UAE

As of 14 February 2025, the United Arab Emirates reported their first case of clade Ib mpox in an individual with a recent history of travel to Uganda. The case had symptom onset on 11 January 2025, with mpox confirmed on 18 January 2025. Please see our Topics in Brief article for further details on mpox.

Take extra precautions
14 February 2025

Mpox in China

As of 13 February 2025, a total of seven cases of clade Ib mpox have been reported in China since the beginning of 2025. The sixth case was a close contact of the imported case reported on 3 January 2025. The seventh case was associated with travel to the United Arab Emirates. Please see our Topics in Brief article for further details on mpox

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Take extra precautions
13 February 2025

Cholera in Angola

As of 9 February 2025, a total of 3,043 confirmed cases of cholera and 101 deaths have been reported. Please see our Topics in Brief article for further details on cholera.

Take usual precautions

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
Follow standard protective measures, as recommended for this destination, disease or situation. Be aware that advice may change and check for updates.
LEVEL 2: AMBER
Take extra precautions
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.
LEVEL 3: RED
FCDO advise against travel
Follow Foreign, Commonwealth & Development Office (FCDO) advice. This may mean avoiding non-essential travel, or all travel. Subscribe to the FCDO destination advice for security updates and travel warnings.

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.


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