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.
Rajshahi
Barisal
Nipah virus in Bangladesh
On 18 September 2025, the World Health Organization reported a total of four confirmed fatal Nipah virus cases in Bangladesh since January 2025. All cases were reported at different times in four separate districts across three different divisions: Barisal, Dhaka and Rajshahi. No epidemiological links have been identified between these cases. Please see our Topics in Brief article for further details on Nipah viral disease.
As of 10 March 2025, three cases of Nipah virus disease and three deaths have been reported from Bangladesh. Please see our Topics in Brief article for further details on Nipah viral disease.
Source: StatecVDPV3 in Spain
In September 2025, a vaccine-type polio enterovirus (cVDPV3) has been detected in environmental samples at two wastewater treatment plants in Baix Llobregat (Catalonia area). Please see our Topics in Brief article for further details on polio.
West Nile virus in Spain
On 16 September 2025, the Andalusia Ministry of Health in Spain reported the first locally acquired human case of West Nile virus (WNV) for the 2025 transmission season. The case was detected in a resident of Mojácar (Almeria) and back dated to July 2025. Please see our Topics in Brief article for further details on West Nile virus.
Chikungunya in Bangladesh
Between 1 January and 31 August 2025, the Institute of Epidemiology, Disease Control and Research in Bangladesh have reported a total of 732 suspected cases of chikungunya in Dhaka. Of these, 400 cases were laboratory-confirmed. Please see our Topics in Brief article for further details on chikungunya.
The Institute of Epidemiology, Disease Control and Research (IEDCR) in Bangladesh have reported an outbreak of chikungunya in Dhaka city. 337 cases were reported between 1 January and 28 May 2025. Please see our Topics in Brief article for further details on chikungunya.
Source: StateMalaria in Greece
On 3 September 2025, the Greek authorities reported two probable locally transmitted cases of malaria (Plasmodium falciparum) in a rural area of Central Greece (Sterea Ellad). Symptom onset in both cases was late July/early August 2025. No further malaria cases have been detected during field investigations. Please see our Topics in Brief article for further details on malaria.
Chikungunya in Hong Kong
As of 11 September 2025, a total of 16 confirmed imported chikungunya cases have been reported in Hong Kong. From 2016 to 2019, Hong Kong recorded between one and 11 imported cases annually. Please see our Topics in Brief article for further details on chikungunya.
As of 15 August 2025, a total of nine confirmed cases of chikungunya have been reported in Hong Kong. All cases have been imported. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 2 August 2025, a case of chikungunya has been reported in a Hong Kong resident who visited Foshan in Guangdong Province in July 2025. This is the first chikungunya case recorded in Hong Kong for 2025. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAcute watery diarrhoea in Nepal
Between 9 August and 7 September 2025, a total of 1,171 cases of acute watery diarhhoea have been reported in Birgunj Meteropolitan City.
Rabies in Thailand
On 9 September 2025, a rabies alert was announced for several areas in Bangkok. People have been advised to avoid contact with stray animals and seek prompt medical advice if bitten or scratched. Please see our Topics in Brief article for further details on rabies.
Oropouche virus disease in Brazil
As of 8 September 2025, a total of 11,967 confirmed cases of Oropouche virus disease and seven deaths (five confirmed, two under investigation) have been reported in Brazil for 2025. The most affected state is Espirito Santo with 6,323 cases and one death, followed by Rio De Janeiro with 2,500 cases and five deaths, and Minas Gerais with 1,367 cases. Please see our Topics in Brief article for further details on Oropouche virus disease.
As of 27 May 2025, a total of 10,572 confirmed cases of Oropouche virus disease, with five deaths (two confirmed, three under investigation), have been reported in Brazil for 2025. Espirito Santa State has been most severely affected with over 6,200 cases. Please see our Topics in Brief article for further details on Oropouche virus disease.
Source: StateAs of 8 May 2025, a total of 9,416 confirmed cases of Oropouche virus disease, with one death currently under investigation, have been reported in Brazil for 2025. Please see our Topics in Brief article for further details on Oropouche virus disease.
Source: StateAs of 23 April 2025, a total of 8,901 confirmed cases of Oropouche virus disease, with one death currently under investigation, have been reported in Brazil during 2025. Please see our Topics in Brief article for further details on Oropouche virus disease.
Source: StateAs of 19 March 2025, a total of 6,683 confirmed cases of Oropouche virus disease, with one death currently under investigation, have been reported in Brazil. Please see our Topics in Brief article for further details on Oropouche virus disease.
Source: StateAs of 25 February 2025, a total of 5,514 confirmed Oropouche virus disease cases, and one suspected death, have been reported in Brazil since the beginning of 2025. Most cases have been reported in Espirito Santo: 4,643 cases, followed by Rio De Janeiro: 485 cases and Paraíba: 287 cases. Please see our Topics in Brief article for further details on Oropouche virus disease.
Source: StateAs of 17 February 2025, a total of 4,847 confirmed cases of Oropouche virus disease have been reported in Brazil since the beginning of 2025. The most affected state is Espirito Santo which has reported 4,317 cases in 2025. Please see our Topics in Brief article for further details on Oropouche virus disease.
Source: StateAs of 2 February 2025, the Brazil Ministry of Health have reported 3,678 cases of Oropouche virus disease for 2025. In 2024, Brazil reported a total of 13,785 Oropouche virus disease cases. Please see our Topics in Brief article for further details on Oropouche virus disease.
Source: PAHOAs of 15 December 2024, a total of 11,695 cases of Oropouche virus disease (OROV) have been reported in Brazil. Cases have been reported in 22 states with Amazonas and Espirito Santo most severely affected. Four deaths associated with OROV have been reported, with four more under investigation. Please see our Topics in Brief article for further details on Oropouche virus disease.
Source: StateAs of 24 November 2024, a total of 9,563 cases of Oropouche virus disease have been reported in Brazil. Most cases have been reported in the Amazonas (3,231 cases) followed by Espirito Santo (1,763 cases). Please see our Topics in Brief article for further details on Oropouche virus disease.
Source: StateAs of 15 October 2024, a total of 8,258 confirmed cases of Oropouche virus disease have been reported in Brazil since the start of the year. The northern states have been most affected. One fetal death and one congenital anomaly have been reported associated with the infection. Other cases are currently being investigated.
Source: PAHOOn 3 August 2024, the authorities in Brazil reported a fetal death due to Oropouche virus disease. Eight additional cases of possible vertical transmission (from pregnant woman to their unborn baby) of Oropouche virus disease are still under investigation in Brazil.
Source: StateAs of 25 July 2024, a total of 7,236 and two deaths have been reported in 2024. These are the first recorded deaths from Oropouche virus disease. Six cases of possible vertical transmission (from pregnant woman to their baby) of Oropouche virus disease are under investigation.
Source: StateAs of 16 July 2024 a total of 6,976 confirmed cases of Oropouche virus disease have been reported since the start of the year. Brazil have recently reported two suspected cases of vertical transmission of the virus (spread of the virus from pregnant women to their baby). These cases are still under investigation.
Source: PAHOBetween 1 January and 25 February 2024, Oropouche virus disease cases were detected in the state of Amazonas (1,821), Rondônia (172), Acre (51) and Roraima (12). Travellers are advised to avoid insect bites.
Source: PAHODengue in French Polynesia
As of 2 September 2025, a total of 2,577 dengue cases (2,312 confirmed and 265 probable) have been reported in French Polynesia since November 2023. Please see our Topics in Brief article for further details on dengue.
Between 27 November 2023 and 13 April 2025, a total of 1,721 (of which 1,551 confirmed) cases of dengue have been reported. Cases have been reported from the majority of the archipelago. Please see our Topics in Brief article for further details on dengue.
Source: StateBetween 27 November 2023 and 17 November 2024, a total of 306 dengue cases (of which 283 confirmed) have been reported. Of the samples serotyped, DENV-1 was identified in 70% of cases, and DENV-2 in 30% of cases. Please see our Topics in Brief article for further details on dengue.
Source: ReliefWebBetween 27 November 2023 and 22 October 2024, a total of 188 dengue cases (of which 173 confirmed) have been reported. Of the samples serotyped, DENV-2 was identified in 47% of cases, and DENV-1 in 53% of cases.
Source: StateBetween 27 November 2023 and 9 August 2024, a total of 110 cases (including 10 probable cases) have been reported. Both DENV-1 and DENV-2 have been circulating. Of those serotypes sampled, 70 percent were identified as DENV-2.
Source: ReliefWebBetween 27 November 2023 and 19 July 2024, 81 confirmed cases of dengue have been reported. As of 19 July 2024, active circulation of the virus is ongoing in Tahiti, Moorea and Nuku-Hiva.
Source: StateNaTHNaC 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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