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.

25 August 2026

Dermatophilus congolensis in Sweden

As of 20 August 2026, a total of four cases of dermatophilosis caused by Dermatophilus congolensis were diagnosed in Stockholm by June 2026 among gay, bisexual and other men who have sex with men. It is believed infection was acquired in Sweden, Japan and Spain.

Take usual precautions
25 August 2026

Dermatophilus congolensis in Switzerland

As of 20 August 2026, a total of six cases of dermatophilosis caused by Dermatophilus congolensis have been identified in Basel between May 2025 and March 2026. The first and second cases were linked to travel abroad, four locally acquired cases were then subsequently diagnosed.

Take usual precautions
25 August 2026

Dermatophilus congolensis in United Kingdom

As of 20 August 2026, one case of dermatophilosis caused by Dermatophilus congolensis has been reported in the United Kingdom.

Take usual precautions
24 August 2026
Australia + South Australia

Influenza A(H5) in Australia

On 23 August 2026, the Australian Centre for Disease Preparedness confirmed the detection of H5 high pathogenicity bird flu (avian influenza) in a long-nosed fur seal found at Beachport in South Australia. This is the first detection of avian influenza A(H5) in a mammal in Australia. Please see our Topics in Brief article for further details on avian influenza.

Take usual precautions
21 August 2026
Niger + Zinder

cVDPV3 in Niger

In the week ending 21 August 2026, one case of circulating vaccine derived poliovirus type 3 (cVDPV3) was reported from Niger, with onset of paralysis on 28 June 2026. Please see our Topics in Brief article for further details on polio.

Take usual precautions
21 August 2026
Austria + Linz

Legionnaires' disease in Austria

As of 20 August 2026, 26 cases and three associated deaths from Legionnaires' disease have been reported from Linz, Austria. The source of infection is not yet known.

Take usual precautions
20 August 2026

Tick-borne encephalitis in United Kingdom

As of 17 August 2026, there have been ten locally acquired cases, three confirmed and seven probable, of tick-borne encephalitis in the UK. Regions where confirmed and probable cases have been reported are Devon, Hampshire, Outer Hebrides, Scottish Highlands and Yorkshire. The risk is very low for the general population and low for high risk groups (such as those living, working or visiting affected areas, as determined by duration of time spent outside). Please see our Topics in Brief article for further details on tick-borne encephalitis.

Take usual precautions
17 August 2026
Albania + Kukës County

Crimean-Congo haemorrhagic fever in Albania

As of 4 August 2026, a case of Crimean-Congo haemorrhagic fever (CCHF) was reported in Tropojë district, Kukës in northern Albania. CCHF cases were last reported in Kukës in 2023. Please see our Topics in Brief article for further details on Crimean-Congo haemorrhagic fever.

Take usual precautions
17 August 2026

Dengue in Sri Lanka

As of 15 August 2026, the National Dengue Control Unit in Sri Lanka has reported a total of 92,011 dengue cases and 68 deaths in 2026. Please see our Topics in Brief article for further details on dengue.

5
Take usual precautions
14 August 2026
Spain + Salamanca

Crimean-Congo haemorrhagic fever in Spain

As of 13 August 2026, a case of locally acquired Crimean-Congo haemorrhagic fever (CCHF) has been reported in Salamanca. This is the fourth reported case of CCHF in Spain in 2026, and the third from Salamanca. Please see our Topics in Brief article for further details on Crimean-Congo haemorrhagic fever.

4
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.