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 Czechia
As of 16 March 2026, a total of four mpox clade Ib cases have been confirmed in Czechia. According to the World Health Organization, two of the cases reported travel history to Germany. Please see our Topics in Brief article for further details on mpox.
Chikungunya in Argentina
As of 16 March 2026, a total of 2,701 chikungunya cases have been reported in Argentina since July 2025. Out of 103 confirmed or probable cases, 63 were locally acquired and 40 cases had a history of travel to either Bolivia, Brazil, Cuba or Paraguay. Please see our Topics in Brief article for further details on chikungunya.
As of 2 March 2025, 200 suspected cases of chikungunya (13 confirmed) have been reported in Salta province since the start of 2026. Six of the confirmed cases reported no history of travel indicating local transmission is occurring. Please see our Topics in Brief article for further details on chikungunya.
Source: StateMpox 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.
Between 1 January and 24 April 2025, 32 confirmed cases of yellow fever and 11 deaths have been reported from Peru. Please see our Topics in Brief article for further details on yellow fever.
Source: PAHOAs of 26 March 2025, 18 cases of yellow fever and eight deaths have been reported from Peru in 2025. The Districts of Huanuco, San Martin and Amazonas have reported cases. Please see our Topics in Brief article for further details on yellow fever.
Source: PAHOIn 2024, a total of 19 confirmed cases including nine deaths were reported. Since the start of 2025, one confirmed fatal case has been reported. Please see our Topics in Brief article for further details on yellow fever.
Source: PAHOAs of 29 July 2024, a total of 16 confirmed yellow fever cases, including seven deaths, have been reported in 2024.
Source: PAHOWest 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.
As of 10 February 2026, 984 cases of chikungunya have been reported from Bolivia in 2026. Please see our Topics in Brief article for further details on chikungunya.
Source: PAHOBetween 1 January and 16 August 2025, a total of 5,159 cases (3,899 confirmed) have been reported. Please see our Topics in Brief article for further details on chikungunya.
Source: PAHOAs of 14 June 2025, a total of 3,863 (3,095 confirmed) locally acquired chikungunya cases, with one death, have been reported in Bolivia since the beginning of 2025. Please see our Topics in Brief article for further details on chikungunya.
Source: PAHOHepatitis 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.
As of 26 January 2026, nine confirmed cases of mpox (clade Ib) have been reported in Comoros. All primary cases reported recent travel to Madagascar which is currently reporting an mpox outbreak. Please see our Topics in Brief article for further details on mpox.
Source: Africa CDCNaTHNaC 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.
