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.

11 June 2026
Australia + Western Australia

Murray Valley encephalitis in Australia

On 10 June 2026, local health authorities in Western Australia reported a death from Murray Valley encephalitis (MVE). The case was likely exposed in the West Kimberley region. Health surveillance programs continue to detect MVE activity across the Kimberley and Pilbara regions. Travellers should avoid mosquito bites.

Take usual precautions
11 June 2026

Mpox in Madagascar

Between 18 December 2025 and 9 June 2026, a total of 2,000 confirmed mpox cases and seven deaths have been reported in Madagascar. Clade Ib mpox has been detected amongst confirmed cases. Please see our Topics in Brief article for further details on mpox.

5
Take extra precautions

Cholera in DRC

As of 11 May 2026, a total of 26,750 cholera cases, with 783 deaths, have been reported in the Democratic Republic of the Congo for 2026. Please see our Topics in Brief article for further details on cholera.

4
Take usual precautions
08 June 2026
Mayotte + Chirongui
Bandrele
Dembeni

Malaria in Mayotte

Since January 2026, and as of 21 May 2026, 171 cases of Plasmodium falciparum malaria have been reported in Mayotte. Of these, 97 cases were imported, 63 were suspected to be locally acquired, and 11 were of unknown origin. Please see our Topics in Brief article for further details on malaria.

Take usual precautions
08 June 2026
Malawi + Southern Region

cVDPV2 in Malawi

In the week ending 2 June 2026, one cVDPV2 case was reported from Malawi, with onset of paralysis on 22 December 2025. Please see our Topics in Brief article for further details on polio.

Take usual precautions

Salmonella in United Kingdom ex Cape Verde

As of 4 June 2026, a total of 70 confirmed Salmonella cases were reported in travellers from England, Scotland and Wales who have visited Cape Verde since 1 October 2025. Please see UKHSA guidance for further information on Salmonella.

1
Take usual precautions

Rabies in Italy ex Morocco

On 29 May 2026 health authorities reported detection of rabies in a dog in Vittorio Veneto, Italy. The dog had been imported illegally from Morocco. Authorities announced mandatory rabies vaccination for all dogs and cats in the municipality. Please see our Topics in Brief article for further details on rabies.

Take usual precautions
02 June 2026
Madagascar + Sud-Ouest

cVDPV1 in Madagascar

As of 27 May 2026, one circulating vaccine-derived poliovirus type 1 (cVDPV1) case was reported in Madagascar, with onset of paralysis on 4 April 2026, from Sud-Ouest province. It is the first cVDPV1 case reported from the country since 2023 and is genetically linked to a virus detected in the country in 2022. Please see our Topics in Brief article for further details on polio.

Take usual precautions
28 May 2026

Mpox in Colombia

As of 25 May 2026, three cases of clade Ib mpox have been reported in Colombia. Previous cases reported in Colombia have reported travel history to Spain and Belgium. Please see our Topics in Brief article for further information on mpox.

Take extra precautions
28 May 2026

Mpox in Slovakia

As of 25 May 2026, five cases of clade Ib mpox have been reported in Slovakia. These are the first reports of confirmed clade I mpox in Slovakia. On 13 April 2026, a case of clade I mpox in Poland was reported with travel history to Slovakia. Please see our Topics in Brief article for further information on mpox.

Take extra 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.