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.

01 October 2026
Zambia + Luapula
Lusaka
Northern
Southern

Cholera in Zambia

On 30 September 2026, Zambia's Ministry of Health declared a new cholera outbreak. As of 29 September 2026, there have been 304 cases, of which 62 cases have been laboratory confirmed, with 11 deaths. Cases have been reported in 7 districts across 5 provinces. Please see our Topics in Brief article for further details on cholera.

Take usual precautions
01 October 2026

Yellow fever in Cote d'Ivoire

Between 1 January and 23 August 2026, a total of 14 yellow fever cases, with 2 deaths, have been reported in eight health districts of Cote d'Ivoire. Please see our Topics in Brief article for further details on yellow fever.

Take usual precautions
01 October 2026
USA + Pennsylvania
South Carolina
Utah

Measles in USA

As of 24 September 2026, 3,659 confirmed measles cases have been reported across 47 states in the United States, during 2026. This exceeds the number of cases reported for the whole of 2025 and is the highest number of measles cases reported in the US for 35 years. The highest number of cases have been reported in Pennsylvania (850), followed by South Carolina (670) and Utah (535). Please see our Topics in Brief article for further details on measles.

1
Take usual precautions
30 September 2026
Senegal + Kédougou

Diphtheria in Senegal

As of 13 August 2026, a total of 13 cases of diphtheria and two deaths have been reported. Please see our Topics in Brief article for further details on diphtheria.

Take usual precautions
30 September 2026
Nigeria + Bauchi
Borno
Kano
Katsina
Sokoto

Diphtheria in Nigeria

Between 1 January and 23 August 2026, a total of 16,997 cases of diphtheria and 596 deaths have been reported. Most cases have been reported from Kano, Bauchi, Katsina, Borno and Sokoto states. Please see our Topics in Brief article for further details on diphtheria.

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

Chikungunya in France

As of 28 September 2026, 125 locally acquired cases of chikungunya have been identified in France, in Tarn, Lot, Gard (Occitanie), Gironde, Landes (Nouvelle-Aquitaine), Val-de-Marne (Ile-de-France) and Var (Provence-Alpes-Cote d'Azur). Please see our Topics in Brief article for further details on chikungunya.

8
Take usual precautions
29 September 2026
Democratic Republic of the Congo + Ituri
North Kivu
South Kivu
Bas-Uele
Tshopo
Haut-Uele
Sud-Ubangi

Ebola disease in DRC

As of 26 September 2026, 8,067 confirmed Ebola disease (Bundibugyo virus) cases and 3,901 deaths have been reported in seven provinces: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele, Bas-Uele and South Ubangi. Please see our Topics in Brief article for further details on Ebola disease.

7
Take extra precautions
25 September 2026

West Nile virus in Kosovo

In 2026, up to 23 September, two locally acquired human cases of West Nile virus have been reported in Kosovo, in two areas. Please see our Topics in Brief article for further details on West Nile virus.

Take usual precautions
25 September 2026

West Nile virus in North Macedonia

In 2026, up to 23 September, 69 locally acquired human cases of West Nile virus have been reported in North Macedonia, in five areas. Please see our Topics in Brief article for further details on West Nile virus.

Take usual precautions
25 September 2026

West Nile virus in Romania

In 2026, up to 23 September, 91 locally acquired human cases of West Nile virus have been reported in Romania, across 22 areas. Please see our Topics in Brief article for further details on West Nile virus.

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.