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.
Chikungunya in India
As of 29 December 2025, a total of 108,379 suspected and 4,995 confirmed chikungunya cases have been reported in India for 2025. Gujarat, Karnataka and Maharashtra states reported the highest number of confirmed cases. Please see our Topics in Brief article for further details on chikungunya.
As of 31 March 2025, India recorded 30,876 supected cases of chikungunya (1,741 confirmed) since the beginning of 2025. The states reporting the highest number of confirmed cases were Maharashtra, Karnataka and Tamil Nadu. Please see our Topics in Brief article for further details on Chikungunya.
Source: WHOAs of 31 October, India recorded 12,587 chikungunya cases since the beginning of 2024. This accounts for the highest number of confirmed cases in the past six years. The states of Andhra Pradesh, Maharashtra, Tamil Nadu, Tripura and Uttarakhand are showing a substantial increase in cases compatared to the past six years. Please see our Topics in Brief article for further details on Chikungunya.
Source: WHOOn 8 November 2024, the Centers for Disease Control and Prevention (CDC), reported a higher than expected number of US travellers returning from the state of Telangana in India with chikungunya. Please see our Topics in Brief article for further details on chikungunya.
Source: CDCChikungunya in China
As of 29 December 2025, a total of 29,497 locally confirmed chikungunya cases have been reported in China for 2025. Please see our Topics in Brief article for further details on chikungunya.
As of 27 September 2025, China has reported a total of 16,452 confirmed chikungunya cases in Guangdong province during 2025. Cases have been reported in 21 cities in the province with the highest numbers in Foshan, Jiangmen, Guangzhou, Shenzhen, Zhanjiang, Zhuhai and Zhongshan City. Additionally, during September 2025, Guangxi Zhuang Autonomous Region reported 297 local cases; Fujian Province reported 124 local cases; and some other provinces (such as Hunan, Sichuan, and Hainan provinces) also reported a few local cases. Please see our Topics in Brief article for further details on chikungunya.
Source: WHOAs of 3 August 2025, China has reported a total of 4,824 confirmed chikungunya across 12 prefecture-level cities in Guangdong province. The majority of cases are concentrated in Shunde District, Foshan City, with 70 cases reported the other 11 prefectures. Please see our Topics in Brief article for further details on chikungunya.
Source: China CDCBetween 20 July and 26 July 2025 a total of 2,940 cases of chikungunya have been reported in Guangdong. Of these cases, 2,882 were reported from Foshan. Please see our Topics in Brief article for further details on chikungunya.
Source: StateChikungunya in Hong Kong
As of 29 December 2025, a total of 77 confirmed chikungunya cases (nine classified as local), including one death, have been reported in Hong Kong for 2025. Please see our Topics in Brief article for further details on chikungunya.
As of 9 December 2025, a total of ten locally acquired cases of chikungunya have been reported in Hong Kong in 2025. Investigations revealed that five locally acquired cases had visited the Tsing Yi Nature Trails. The trails have been closed to the public until further notice. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 13 November 2025, a total of four confirmed locally acquired chikungunya cases have now been reported in Hong Kong for 2025. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 26 October 2025, health authorities have reported Hong Kong's first locally acquired case of chikungunya (CHIKV). Please see our Topics in Brief article for further details on chikungunya.
Source: StateDengue in Guatemala
As of 29 November 2025, a total of 44,654 dengue cases, with six deaths, have been reported in Guatemala for 2025. Serotypes DENV-1, DENV-2 and DENV-3 have been reported. Please see our Topics in Brief article for further details on dengue.
Mpox in Romania
On 22 December 2025, the World Health Organization reported the first detection of mpox clade Ib in Romania. This case was confirmed in an adult with history of travel to China in August 2025. No additional cases have been reported in Romania. Please see our Topics in Brief article for further details on mpox.
Dengue in Mexico
As of 13 December 2025, a total of 141,421 dengue cases (21,344 confirmed) with 85 deaths, have been reported in Mexico for 2025. Serotypes DENV-1, DENV-2, DENV-3 and DENV-4 have all been reported. Please see our Topics in Brief article for further details on dengue
As of 27 October 2025, a total of 99,508 confirmed dengue cases have been reported in Mexico for 2025. Serotypes DENV-1, DENV-2, DENV-3 and DENV-4 have all been reported. Please see our Topics in Brief article for further details on dengue.
Source: PAHOAs of 6 September 2025, a total of 82,918 dengue cases have been reported since the start of the year. All four dengue serotypes have been reported in Mexico during 2025. Please see our Topics in Brief article for further details on dengue.
Source: PAHOAs of 10 July 2025, a total of 49,085 confirmed dengue cases have been reported in Mexico for 2025. Serotypes DENV-1, DENV-2, DENV-3 and DENV-4 have all been reported. Please see our Topics in Brief article for further details on dengue.
Source: PAHOAs of 6 October 2024, a total of 359,755 cases of dengue (284,679 suspected and 75,076 confirmed) and 182 deaths have been reported since the start of January 2024. DENV-3 is the predominant serotype, followed by DENV-2, DENV-1 and DENV-4.
Source: StateAs of 25 August 2024, a total of 257,175 cases (41,923 confirmed and 215,252 suspected) have been reported since the beginning of the year. During the same time period in 2023, a total of 59,037 cases were recorded. DENV-3 is the predemoninant serotype, followed by DENV-2, DENV-1 and DENV-4.
Source: StateSince the beginning of 2024 and up to 11 August, a total of 179,349 cases (33,957 confirmed) and 101 deaths have been reported. Of the cases serotyped, DENV-3 is the predominant serotype, followed by DENV-2, DENV-1 and DENV-4.
Source: StateAs of 26 July 2024, a total of 128,095 dengue cases, and 49 deaths, have been reported since the beginning of 2024. DENV-1, DENV-2 and DENV-3 viruses have been identified in the country.
Source: PAHOAs of 16 June 2024, 83,997 dengue cases and 26 deaths have been reported in 2024, an increase of 241% compared to the same period in 2023. The majority of cases have been reported from Guerrero, Tabasco, and Quintana Roo. DENV-1, DENV-2, DENV-3 and DENV-4 viruses have been identified in the country.
Source: WHOAs of 27 February 2024, during the first seven weeks of 2024, the Ministry of Health, Mexico have reported 5,439 dengue cases, which is a 468% increase compared to the equivalent 2023 period (958 cases). 74% of cases are concentrated within Guerrero, Tabasco, Quintana Roo, Veracruz y Colima states.
Source: StateHantavirus in Bolivia
As of 15 November 2025, 48 cases of hantavirus pulmonary syndrome (including 11 deaths) have been reported in Bolivia during 2025. This total doubles the average reported in 2023 and 2024. Cases have been recorded in the Departments of La Paz, Tarija, Beni and Santa Cruz with 93% being exposed in rural areas. Please see UKHSA guidance for more details on hantavirus.
Mpox in Netherlands
As of 18 December 2025, a total of 10 cases of mpox clade Ib have been reported in the Netherlands. Of these cases, nine have been reported in the last six weeks. World Health Organization consider there to be community transmission of the virus in the Netherlands. Please see our Topics in Brief article for further details on mpox.
On 17 October 2025, public health authorities in the Netherlands reported a case of mpox clade Ib with no recent travel history. This is the first locally acquired case of mpox clade Ib reported in the Netherlands. Please see our Topics in Brief article for further details on mpox.
Source: StateDengue in Mali
As of 30 November 2025, a total of 4,042 suspected dengue cases (931 confirmed) have been reported in Mali during 2025. Cases have been reported in all 11 regions of the country. Please see our Topics in Brief article for further details on dengue.
As of 17 November 2025, a total of 865 confirmed (and 2,795 suspected) dengue cases have been reported in Mali for 2025. Cases have been reported in all 11 regions of the country. Please see our Topics in Brief article for further details on dengue.
Source: Africa CDCAs of 6 November 2025, a total of 745 confirmed (and 2,674 suspected) dengue cases have been reported in Mali for 2025. Cases have been reported in all 11 regions of the country. Please see our Topics in Brief article for further details on dengue.
Source: Africa CDCSince the beginning of 2025, a total of 2,315 cases of dengue (478 confirmed) have been reported in Mali. There has been a 29 percent average increase in the number of new cases in the last four weeks. Since the start of the outbreak in September 2023, a total of 17,407 cases (2,086 confirmed) and 74 deaths have been reported. Please see our Topics in Brief article for further details on dengue.
Source: Africa CDCAs of 15 June 2025, a total of 369 confirmed and 1,497 suspected dengue cases have been reported in Mali for 2025, with a four-fold average increase in new cases in the last four weeks. Since the start of this outbreak in September 2023, a total of 1,877 confirmed and 14,981 suspected dengue cases and 74 deaths, have been reported. Please see our Topics in Brief article for further details on dengue.
Source: Africa CDCOtjozondjupa
Cholera in Namibia
As of 3 December 2025, a total of 24 cholera cases (13 confirmed) and one death have been reported for 2025 in Kunene and Otjozondjupa regions. Prior to 2025, the last reported cholera outbreak was in 2014. Please see our Topics in Brief article for further details on cholera.
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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