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.
Yellow fever in Liberia
On 21 June 2026, a confirmed case of yellow fever was reported in Grand Gedeh county, Liberia. Please see our Topics in Brief article for further details on yellow fever.
On 5 June 2026, the World Health Organization reported that following a confirmed yellow fever case in Grand Cape Mount County, a reactive yellow fever vaccination campaign was conducted. Please see our Topics in Brief article for further details on yellow fever.
Source: WHOShigellosis in India
As of 29 June 2026, a total of 273 confirmed cases of shigellosis, including seven deaths have been reported since the start of 2026. The outbreak is concentrated in northern Kerala. Please see UKHSA guidance for further information on shigella.
Zika in North Macedonia ex Maldives
On 19 June a case of Zika virus in Macedonia was confirmed in a traveller who had returned from the Maldives. This is the first confirmed case of Zika virus in Macedonia. The risk to the population is assessed as low. Please see our Topics in Brief article for further details on Zika virus.
Crimean-Congo haemorrhagic fever in Iraq
As of 15 June 2026, 171 cases of Crimean-Congo haemorrhagic fever (CCHF), including 11 deaths have been confirmed since the start of 2026. Cases have been reported across 15 governorates with Thi Qar being most severely affected. Please see our Topics in Brief article for further details on Crimean-Congo haemorrhagic fever.
Chikungunya in Seychelles
As of June 2026, over 166 chikungunya cases were reported from 13 different European countries in returning travellers from the Seychelles since November 2025. Please see our Topics in Brief article for further details on chikungunya.
As of 27 February 2026, over 70 chikungunya cases were reported in European travellers returning from the Seychelles since November 2025. Please see our Topics in Brief article for further details on chikungunya.
Source: ECDCBetween early December 2025 and 30 January 2026, GeoSentinel surveillance reported nine confirmed and four probable cases of chikungunya virus disease in European travellers returning from the Seychelles. Please see our Topics in Brief article for further details on chikungunya.
Source: GeoSentinelDengue in Maldives
As of 1 June 2026, 2,969 cases of dengue have been reported in the Maldives since the start of 2026. This represents an increase compared to the same period in previous years. The ECDC have also reported at least 107 imported cases into Europe from the Maldives since 2025. Recent data shows a declining trend in these imported cases since spring 2026. Please see our Topics in Brief article for further details on dengue.
As of 15 April 2026, 1,908 cases of dengue have been reported in the Maldives since the start of 2026. This represents an increase compared to the same period in previous years. Cases has been recorded across all Atolls. Please see our Topics in Brief article for further details on dengue.
Source: WHOBetween 1 and 31 January 2026, 631 cases of dengue were reported from the Maldives. Please see our Topics in Brief article for further details on dengue.
Source: WHOcVDPV1 in Ethiopia
In the week ending 24 June 2026, one circulating vaccine-derived poliovirus type 1 (cVDPV1) case was reported from Gambella, Ethiopia, with onset of paralysis on 16 May 2026. Five cVDPV1 cases have been reported in 2026. Please see our Topics in Brief article for further details on polio.
Ebola disease in France ex DRC
On 24 June 2026, French Health authorities reported a confirmed case of Ebola disease in a doctor returning from humanitarian aid work in the Democratic Republic of Congo. Please see our Topics in Brief article for further details on Ebola disease.
Dengue in Samoa
As of 14 June 2026, a total of 19,764 confirmed cases of dengue fever, with nine deaths have been reported in Samoa since this outbreak began in January 2025. DENV-1 and DENV-2 have been confirmed as circulating in Samoa. Please see our Topics in Brief article for further details on dengue.
As of 8 February 2026, a total of 4,881 confirmed and 16,550 clinically diagnosed dengue cases, with eight deaths have been reported in Samoa since this outbreak began in January 2025. DENV-1 and DENV-2 have been confirmed as circulating in Samoa. Please see our Topics in Brief article for further details on dengue.
Source: StateAs of 12 October 2025, Samoa Ministry of Health has recorded a total of 14,996 clinically diagnosed dengue cases (including 4,362 laboratory confirmed) and seven deaths since January 2025. The circulating serotypes remain predominantly DENV-1 (91 percent) and DENV-2 (9 percent). In the week 6–12 October, case numbers increased by 4.5 percent compared to the previous week. Please see our Topics in Brief article for further details on dengue.
Source: SPCAs of 29 September 2025, a total of 14,435 clinically diagnosed dengue cases (including 4,259 laboratory confirmed cases) and seven deaths have been reported in Samoa since the start of 2025. DENV-1 and DENV-2 serotypes have been identified. Please see our Topics in Brief article for further details on dengue.
Source: SPCAs of 9 September 2025, a total of 12,025 clinically diagnosed dengue cases (including 3,630 laboratory confirmed cases), and six deaths, have been reported in Samoa since January 2025. Co-circulation of DENV-1 and DENV-2 serotypes have been identified. Please see our Topics in Brief article for further details on dengue.
Source: SPCAs of 10 August 2025, a total of 7,970 clinically diagnosed cases of dengue (2,743 confirmed) and six deaths have been reported since January 2025. Most cases (88%) are from Upola Island. DENV-1 and DENV-2 dengue serotypes are in circulation. Please see our Topics in Brief article for further details on dengue.
Source: StateAs of 29 July 2025, a total of 2,277 confirmed dengue cases, with two associated deaths, have been reported in Samoa since the outbreak began in April 2025. Please see our Topics in Brief article for further details on dengue.
Source: SPCAs of 13 July 2025, a total of 1,276 confirmed dengue cases, with two associated deaths, have been reported in Samoa since the outbreak began in April 2025. The majority of cases are from Upolu Island. Of the 20 cases with confirmed serotypes, 85% are dengue virus type 1 (DENV-1) and 15% are dengue virus type 2 (DENV2). Please see our Topics in Brief article for further details on dengue.
Source: SPCAs of 22 June 2025, a total of 563 confirmed dengue cases, with one associated death, have been reported in Samoa since the outbreak began in April 2025. The majority of cases are in Upolu Island. Out of 20 cases with confirmed serotypes, 85% are dengue virus type 1 (DENV-1) and 15% are dengue virus type 2 (DENV2). Please see our Topics in Brief article for further details on dengue.
Source: SPCAs of 2 June 2025, a total of 211 confirmed dengue cases, with one associated death, have been reported in Samoa since this outbreak began in April 2025. The majority of cases are in the urban area of Apia and northwestern Upolu. Out of 20 cases with confirmed serotypes, 85% are dengue virus type 1 (DENV-1) and 15% are dengue virus type 2 (DENV2). Please see our Topics in Brief article for further details on dengue.
Source: StateAs of 19 May 2025, a total of 110 confirmed cases of dengue (including one death) have been reported since the declaration of the outbreak on 17 April 2025. The majority of cases (77%) are from Upolu Island. Of the 20 cases that have confirmed serotypes, 85% are DENV-1 and 15% are DENV-2. Please see our Topics in Brief article for further details on dengue.
Source: SPCOn 17 April 2025, the Government of Samoa announced a dengue fever outbreak. A total of 15 confirmed dengue cases, including one death, have been reported since January 2025. All reported cases are residents of the North West (Lauli’i to Mulifanua) villages, Upolu island, Samoa. Please see our Topics in Brief article for further details on dengue.
Source: StateNipah virus in India
As of 12 June 2026, the Kerala Health Department confirmed one case of Nipah virus infection in India. Contact tracing and public health preventive measures are ongoing. Please see our Topics in Brief article for further details on Nipah virus disease.
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.
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