UKHSA publishes travel-associated infections report

Case numbers of selected travel-associated infections reported in England, Wales and Northern Ireland during 2025

The UK Health Security Agency (UKHSA) has published their latest report summarising case numbers of selected travel-associated infections reported in England, Wales and Northern Ireland (EWNI) during 2025 [1].

This report includes detailed information on the trends of chikungunya, cholera, dengue, rickettsial infections and Zika virus disease during 2025. An infection summary and key findings are also provided for Japanese encephalitis, Oropouche virus disease and yellow fever [1].

The report showed [1]:

• An increase in chikungunya with a total of 160 cases reported during 2025, compared with 112 in 2024. Most cases reported travel to Sri Lanka, India and Bangladesh, reflecting on-going outbreaks in the region.
• 13 travel-associated cholera cases and an additional case in an individual who consumed water from an endemic country were reported in 2025. The main travel destination for cases were Pakistan, India and Ethiopia. This compares to nine cholera cases in 2024.
• Oropouche virus disease was reported for the first time in EWNI during 2025. The three imported cases were all linked to travel to Brazil.
• Cases of dengue decreased to 344 during 2025, down from 904 cases in 2024. India, Thailand and Indonesia were the most frequently reported travel destinations.
• Seven cases of Zika virus disease were recorded in 2025 compared with 16 cases in 2024. India and Thailand were the most frequently reported destinations.
• The number of returning travellers with rickettsial infections was 40 in 2025, compared to 44 in 2024, with most cases reporting travel to South Africa. No cases of Japanese encephalitis or yellow fever were reported in EWNI during 2025.

See the accompanying UKHSA news item 'Travellers reminded to protect themselves against mosquito bites' for further advice.

UKHSA has also published separate provisional data on imported malaria cases in the UK for 2025. This shows 1,629 cases of malaria were reported, with 1,325 cases of P.falciparum (the most severe form of malaria). This represents a decrease on imported cases in 2024 when 1,812 cases were recorded in provisional figures.

For more country-specific information on travel health visit our Country Information pages and Outbreak Surveillance section.

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