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.
Mpox in Austria
Since 1 Feb 2026 and as of 12 March 2026, six cases of clade Ib mpox have been reported in Austria. Please see our Topics in Brief article for further details on mpox.
Mpox in Sweden
Since 1 Feb 2026 and as of 12 March 2026, seven cases of clade Ib mpox have been reported in Sweden. Please see our Topics in Brief article for further details on mpox.
Yellow fever in Peru
As of 13 March 2026, two yellow fever cases have been reported in the department of Madre de Dios. Seven further cases are under investigation from various departments. 49 cases of yellow fever (19 deaths) were reported in Peru during 2025. Please see our Topics in Brief article for further details on yellow fever.
West Nile virus in Anguilla
As of 11 March 2026, a locally acquired (autochthonous) case of West Nile virus was reported in Anguilla. This is the first human case of West Nile virus reported from Anguilla. Please see our Topics in Brief article for further details on West Nile virus.
Chikungunya in Bolivia
As of 13 March 2026, 5,371 cases of chikungunya have been reported from Bolivia in 2026. Cases have been reported from the departments of Santa Cruz (4,500), Cochabamba (303), Tarija (332), Chuquisaca (81) and La Paz (68). Please see our Topics in Brief article for further details on chikungunya.
Hepatitis A in Hong Kong
Between September 2025 and February 2026, a cluster of 24 cases of hepatitis A have been reported in Hong Kong. Around 60% of cases have been recorded in individuals identifying as men who have sex with men (MSM). Please see our Topics in Brief article for further details on hepatitis A.
cVDPV3 in Nigeria
As of 4 March 2026, a case of circulating vaccine-derived poliovirus type 3 (cVDPV3) has been reported with an onset of paralysis reported on 3 January 2026. Five cases of cVDPV3 were reported in Nigeria during 2025. Please see our Topics in Brief article for further details on polio.
Mpox in Comoros
As of 9 March 2026, 28 confirmed cases of mpox (clade Ib) have been reported in Comoros. Please see our Topics in Brief article for further details on mpox.
Chikungunya in St Lucia
As of 5 March 2026, a confirmed case of chikungunya has been reported in St Lucia. The Ministry of Health notes that several countries in the area have recently reported increases in chikungunya activity. Given the movement of people between territories and the presence of the Aedes mosquito locally, St Lucia remains at risk for additional cases. Please see our Topics in Brief article for further details on chikungunya.
Cholera in Zambia
Between 5 August 2025 and 4 March 2026, a total of 1,133 cholera cases and 18 deaths have been reported. The highest number of cases have been recorded in Mpulungu (417 cases), Lusaka (326 cases), and Nsama (161 cases). Please see our Topics in Brief article for further details on cholera.
NaTHNaC regularly review and update information on disease outbreaks and other health issues that may affect the UK traveller. You can search the information by disease or by country in our Outbreak Surveillance section.
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. 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.
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. If you wish to use the following content for official purposes, please refer to the original sources of information.
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. This may mean avoiding non-essential travel, or all travel, follow the FCDO advice for details. Please note we do not report on FCDO safety and security alerts. Travellers should check the FCDO travel advisories for their destination for this information. |
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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.
