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.

29 June 2026

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.

Take usual precautions
29 June 2026

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.

2
Take usual precautions
29 June 2026

Dengue 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.

2
Take usual precautions
26 June 2026
Ethiopia + Gambela

cVDPV1 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.

Take usual precautions

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.

Take extra precautions
24 June 2026

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.

11
Take usual precautions
23 June 2026
India + Kerala

Nipah 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.

Take usual precautions
15 June 2026

Chikungunya in Suriname

As of 16 May 2026, a total of 7,484 chikungunya cases (3,389 confirmed) have been reported in Suriname for 2026. Please see our Topics in Brief article for further details on chikungunya.

3
Take usual precautions
12 June 2026

Diphtheria in Haiti

Between 1 January and 26 May 2026, 1,616 suspected cases of diphtheria have been reported in Haiti, of which 159 cases and five deaths were confirmed. Confirmed cases have been reported in all ten departments of the country. Please see our Topics in Brief article for further details on diphtheria.

Take usual precautions
12 June 2026
USA + New Mexico

Plague in USA

On 11 June 2026, the first fatal human case of plague for 2026 was reported in New Mexico. The case was detected in Santa Fe County. Please see our Topics in Brief article for further details on plague.

Take usual precautions

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
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
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.

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.