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.

12 October 2026

Diphtheria in Niger

As of 27 September 2026, 949 suspected cases of diphtheria and 36 deaths have been reported in Niger from 50 of 72 health districts. Please see our Topics in Brief article for further details on diphtheria.

Take usual precautions
12 October 2026
USA + Florida

Dengue in USA

As of 3 October 2026, 296 cases of locally acquired dengue have been reported in Florida, USA. The outbreak has surpassed Florida's previous annual high of 200 cases, reported in 2023. DENV-2 and DENV-3 have been identified amongst cases in 2026. Please see our Topics in Brief article for further details on dengue.

7
Take usual precautions
12 October 2026

Dengue in Marshall Islands

As of 25 September 2026, 112 confirmed dengue cases have been reported in the Marshall Islands. DENV-1 has been detected. No dengue cases were reported in the Marshall Islands in 2025. Please see our Topics in Brief article for further details on dengue.

1
Take usual precautions
12 October 2026

Dengue in Italy

As of 7 October 2026, a total of 68 confirmed locally acquired dengue cases have been reported for 2026 in Italy. Please see our Topics in Brief article for further details on dengue.

4
Take usual precautions
12 October 2026
Russia + Irkutsk

Pneumonia, unknown origin in Russia

On 6 October 2026, following the reported death of a laboratory worker in Irkutsk, Russia, the Russian Federation health authorities informed the World Health Organisation (WHO) that no case of plague had been registered recently in Irkutsk Oblast. After testing negative for a number of high-threat pathogens, the patient was determined to have died from pneumonia of undetermined etiology. Based on the information provided, WHO has not identified evidence of ongoing transmission associated with this event. WHO will continue to monitor the situation and assess any potential public health implications as further information becomes available.

1
Take usual precautions
09 October 2026
Ghana + Upper West

Yellow fever in Ghana

As of 8 October 2026, Ghana's Ministry of Health has reported three confirmed fatal yellow fever cases in Upper West Region. An emergency response, including deployment of rapid response teams and a targeted vaccination campaign, is ongoing. Please see our Topics in Brief article for further details on yellow fever.

Take usual precautions
09 October 2026
France + Nouvelle-Aquitaine
Occitanie
Île-de-France
Provence Alpes-Côte d’Azur

Chikungunya in France

As of 5 October 2026, a total of 146 locally acquired chikungunya cases have been reported during 2026 in Tarn, Lot (Occitanie), Gironde (Nouvelle-Aquitaine), Val-de-Marne (Île-de-France) and Var (Provence-Alpes-Cote d'Azur) in France. Please see our Topics in Brief article for further details on chikungunya.

9
Take usual precautions
08 October 2026
Nigeria + Borno

Cholera in Nigeria

As of 7 October 2026, a total of 68,152 suspected cholera cases and 394 deaths have been reported in Borno State since this outbreak began in May 2026. All 22 local government areas in Borno have now reported cases. Please see our Topics in Brief article for further details on cholera.

4
Take usual precautions
08 October 2026

Dengue in Bangladesh

As of 8 October 2026, a total of 94,151 dengue cases, with 294 deaths, have now been reported in Bangladesh during 2026. Please see our Topics in Brief article for further details on dengue.

11
Take usual precautions
06 October 2026

cVDPV2 in Central African Republic

As of 2 October 2026, five circulating vaccine-derived poliovirus type 2 (cVDPV2) cases have been reported in Central African Republic in 2026. Please see our Topics in Brief article for further details on polio.

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.