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.
Chikungunya in Hong Kong
As of 9 December 2025, a total of ten locally acquired cases of chikungunya have been reported in Hong Kong in 2025. Investigations revealed that five locally acquired cases had visited the Tsing Yi Nature Trails. The trails have been closed to the public until further notice. Please see our Topics in Brief article for further details on chikungunya.
Otjozondjupa
Cholera in Namibia
As of 3 December 2025, a total of 24 cholera cases (13 confirmed) and one death have been reported for 2025 in Kunene and Otjozondjupa regions. Prior to 2025, the last reported cholera outbreak was in 2014. Please see our Topics in Brief article for further details on cholera.
Mpox in Greece
On 8 December 2025, the World Health Organization reported the first detection of mpox clade Ib in Greece. This case was confirmed in an adult with recent history of travel to the Middle East. Please see our Topics in Brief article for further details on mpox.
Dengue in Mauritania
As of 3 December 2025, a total of 7,280 dengue cases (4,050 confirmed) and one death, have been reported since this outbreak began in May 2025. Serotypes DENV-1 and DENV-2 have been identified. Cases have been reported in 13 out of 15 regions countrywide, with 35% of confirmed cases in South Nouakchott region. Please see our Topics in Brief article for further details on dengue.
MERS-CoV in France
On 4 December 2025, French health authorities reported two confirmed, travel-associated Middle East respiratory syndrome coronavirus (MERS-CoV) cases. Both travellers had visited the Arabian Peninsula. These are the first imported MERS-CoV cases detected in France since 2013. Please see our Topics in Brief article for further details on MERS-CoV.
Mpox in United Kingdom
On 8 December 2025, the UK Health Security Agency reported that testing (genomic sequencing) has identified a new recombinant mpox virus, with elements of clade Ib and IIb mpox. This is not unexpected, but highlights the continued potential for mpox virus to evolve and the importance of surveillance. This case was diagnosed in England in an individual who recently visited Asia. Please see our Topics in Brief article for further details on mpox.
Hawassa
Marburg virus disease in Ethiopia
As of 4 December 202, the Ministry of Health in Ethiopia have reported 13 confirmed cases of Marburg virus disease with 8 deaths. As of 5 December the UK FCDO advises against all but essential travel within 5km of the towns of Jinka and Hawassa due to the ongoing Marburg outbreak.
Leptospirosis in Jamaica
As of 26 November 2025 a total of 18 confirmed cases of leptospirosis have been reported following Hurricane Melissa. Please see our Topics in Brief article below for further details on leptospirosis.
Dengue in Sri Lanka
As of 23 November 2025, a total of 45,422 dengue cases have been reported in Sri Lanka during 2025. Please see our Topics in Brief article for further details on dengue.
Shigella sonnei in Cape Verde
The UK Health Security Agency is currently investigating an increase in reports of Shigella sonnei infection in travellers. The majority of cases report travel to Cape Verde. An outbreak of Shigella sonnei was also reported in Cape Verde in 2022, with cases occurring in travellers from a number of European countries including the UK.
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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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. |
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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.
