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.
Zika in Thailand
As of 5 July 2025, seven cases of Zika virus disease have been reported since the start of 2025. The following provinces have reported cases: Nakhon Ratchasima, Buriram, Chaiyaphum and Surin. Please see our Topics in Brief article for further details on Zika virus disease.
Between January 2024 and 7 February 2025, the Ministry of Health in Thailand has reported a total of 433 Zika virus cases and six deaths across 46 provinces. Please see our Topics in Brief article for further details on Zika.
Source: StateAs of 1 November 2024, a total of 347 Zika virus cases, with no deaths have been reported across 42 provinces so far in 2024. Most cases have been in Central Region (106 cases). Please see our Topics in Brief article for further details on Zika.
Source: StateAs of 27 September 2024, a total of 276 Zika virus cases across 40 provinces have now been reported for 2024.
Source: StateOn 5 September 2024, the Thai Ministry of Health has reported a total of 229 Zika virus cases and no deaths across 38 provinces so far in 2024. Most cases have been in Central Region (80 cases).
Source: StateOn 22 February 2024, the Ministry of Public Health, Thailand has reported a total of 73 Zika virus cases and no deaths across 19 provinces in Thailand in 2024.
Source: StateAs of 11 January 2024, a total of 777 Zika virus cases have been reported since the start of 2023. Cases have been reported across 36 provinces, with the most affected areas in the Central and Northern regions.
Source: StateAs of 21 December 2023, a total of 722 Zika virus cases have been reported in Thailand between 1 January and 15 December 2023. This is an increase compared to last year. Cases have been reported across 36 provinces, with the most affected areas in the Central and Northern regions.
Source: StateGambela
Oromia
Amhara
Cholera in Ethiopia
From 1 January to 11 June 2025, 4,919 cholera cases and 46 deaths were reported in four regions of Ethiopia: Afar, Amhara, Gambela and Oromia. Please see our Topics in Brief article for further details on cholera.
As of 30 March 2025, a total of 2,567 cases (35 deaths) of cholera have been reported since the start of 2025, primarily from the Amhara and Gambela regions. Displacements and mass gatherings at a popular religious site have been associated with this current outbreak.
Source: WHOHuambo
Huila
Luanda
Malanje
Yellow fever in Angola
On 6 July 2025, the Angola Ministry of Health reported 7 confirmed yellow fever cases to the World Health Organization. The cases were confirmed from samples collected through routine surveillance between July 2024 and February 2025. The confirmed cases were reported from 5 provinces: Luanda, Benguela, Malanje, Huíla, and Huambo. Please see our Topics in Brief article for further details on yellow fever.
Measles in USA
As of 1 July 2025, the US Centers for Disease Control and Prevention have reported 1,267 confirmed measles cases and 3 deaths across 38 jurisdictions in 2025. There have been 27 outbreaks reported in 2025, and 88 percent of confirmed cases are outbreak-associated. Most cases have been reported in Texas (over 700 cases). Please see our Topics in Brief article for further details on measles.
As of 17 April 2025, a total of 800 cases of measles have been reported in the United States in 2025. This is the second highest annual case count in the United States in 25 years. 654 (82%) cases have been reported from New Mexico, Oklahoma, and Texas. During the whole of 2024, 285 cases were reported. Please see our Topics in Brief article for further details on measles.
Source: CDCBetween 1 January and 27 March 2025, a total of 483 measles cases were reported by 20 jurisdictions: Alaska, California, Florida, Georgia, Kansas, Kentucky, Maryland, Michigan, Minnesota, New Jersey, New Mexico, New York City, New York State, Ohio, Pennsylvania, Rhode Island, Tennessee, Texas, Vermont, and Washington. During 2024, a total of 285 cases were reported in USA. Please see our Topics in Brief article for further details on measles.
Source: StateAs of 28 February 2025, a total of 164 measles cases, including one death, have been reported from eight states in 2025. Please see our Topics in Brief article for further details on measles.
Source: CDCAs of 21 February 2025, 93 cases of measles have been reported from eight states in 2025. Please see our Topics in Brief article for further details on measles.
Source: StateChikungunya in Mayotte
As of 4 July 2025, a total of 1,112 chikungunya cases, with 38 hospital admissions, have now been reported in Mayotte since the start of 2025. Please see our Topics in Brief article for further details on chikungunya.
As of 10 June 2025, a total of 746 cases of chikungunya, including 19 hospitalisations, have been reported on the island since the start of 2025. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 25 May 2025, a total of 560 cases of chikungunya have been reported on the island since the start of 2025. On 27 May 2025, Mayotte increased its arbovirus alert and response level to level 3 (out of 5) to reflect intense and widespread transmission on the island. Please see our Topics in Brief article for further details on chikungunya.
Source: StateBetween 1 January and 23 May 2025, a total of 435 cases of chikungunya have been reported. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 16 May 2025, a total of 205 confirmed chikungunya cases, with eight hospital admissions, have now been reported in Mayotte for 2025. This total includes 34 imported cases, 109 locally acquired cases and 62 cases currently under investigation. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 9 May 2025, a total of 139 chikungunya cases, with five hospital admissions, have now been reported in Mayotte in 2025. This total includes 29 imported cases, 58 locally acquired cases and 52 cases currently under investigation. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 2 May 2025, a total of 89 chikungunya cases have now been reported in Mayotte. This includes 28 locally acquired cases. Please see our Topics in Brief article for further details on chikungunya.
Source: StateOn 26 March 2025, the Regional Health Agency (ARS) Mayotte reported a total of four cases of chikungunya on the island. This included three imported cases and the first reported locally acquired case. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 5 March 2025, health authorities in Mayotte announced that a first case of imported chikungunya has been detected on the island, in a resident who recently visited Réunion. No locally acquired chikungunya cases have been reported in Mayotte to date. Please see our Topics in Brief article for further details on chikungunya.
Source: StateMalaria in Suriname
On 30 June 2025, the World Health Organization certified Suriname as malaria-free. This is the first country in the Amazon Region to achieve this status. The last locally transmitted case of Plasmodium falciparum malaria in Suriname was recorded in 2018, with the final Plasmodium vivax case in 2021. Please see our Topics in Brief article for further details on malaria.
Dengue in Comoros
As of 28 June 2025, a total of 1,283 dengue cases (412 confirmed) and one death have been reported from the Comoros islands. Ndzuwani has reported 975 cases, Ngazidja 269 cases and Mwali 30 cases. Please see our Topics in Brief article for further details on dengue.
As of 2 March 2025, a total of 143 cases of dengue and one death have been reported from Anjouan Island since 3 February 2025. Please see our Topics in Brief article for further details on dengue.
Source: WHOHepatitis A in Austria
As of 18 June 2025, a total of 87 confirmed and 44 suspected hepatitis A (HAV) cases have been reported during 2025 in Austria. 63% of cases have required hospitalisation and 3 deaths have been recorded. Individuals experiencing homelessness and those who use or inject drugs have been identified among the affected populations. Please see our Topics in Brief article for further details on hepatitis A.
Hepatitis A in Hungary
Between January and May 2025, 641 cases of suspected hepatitis A (HAV) have been reported, of which 530 have been laboratory confirmed. Most cases have been reported in and around Budapest. A higher than expected number of HAV clusters have been reported in a number of European countries primarily affecting adults experiencing homelessness, those who use/inject drugs, and those living in poor santitary conditions. Please see our Topics in Brief article for further details on hepatitis A.
Djibouti
cVDPV1 in Djibouti
As of 20 June 2025, eight circulating vaccine-derived poliovirus type 1 (cVDPV1) positive environmental samples, collected in February, March and April 2025, were reported from Djibouti and Arta. These are the first cVDPV1 isolates reported from the country. Please see our Topics in Brief article for further details on polio.
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
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Follow standard protective measures, as recommended for this destination, disease or situation. Be aware that advice may change and check for updates. |
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LEVEL 2: AMBER |
Take extra precautions
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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. |
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LEVEL 3: RED |
FCDO advise against travel
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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. |
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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.
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