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Japanese encephalitis
Japanese encephalitis is transmitted to humans in predominantly rural parts of Asia and the Western Pacific especially where rice growing and pig farming are common
Updated: 02 June 2026
Hepatitis B
The hepatitis B virus is one of the most prevalent blood-borne viruses worldwide and is a major cause of chronic liver disease and liver cancer
Updated: 05 June 2025
Malaria
Malaria is a serious and potentially life-threatening disease, transmitted to humans through the bite of infected female Anopheles spp. mosquitoes
Updated: 02 June 2026
Tick-borne encephalitis
Tick-borne encephalitis is a viral infection which can cause a range of symptoms from a mild and short-lived febrile illness to a severe infection of the central nervous system
Updated: 16 May 2024
Explore more
Japanese encephalitis
Japanese encephalitis is transmitted to humans in predominantly rural parts of Asia and the Western Pacific especially where rice growing and pig farming are common
Updated: 02 June 2026Hepatitis B
The hepatitis B virus is one of the most prevalent blood-borne viruses worldwide and is a major cause of chronic liver disease and liver cancer
Updated: 05 June 2025Malaria
Malaria is a serious and potentially life-threatening disease, transmitted to humans through the bite of infected female Anopheles spp. mosquitoes
Updated: 02 June 2026Tick-borne encephalitis
Tick-borne encephalitis is a viral infection which can cause a range of symptoms from a mild and short-lived febrile illness to a severe infection of the central nervous system
Updated: 16 May 2024Infectious diseases
Dengue
Dengue is an infection caused by the dengue virus of which there are four different subtypes. The disease is transmitted by mosquitoes
Updated: 02 June 2026Chikungunya
This viral infection occurs in some tropical and subtropical regions of the world, predominantly transmitted through the bite of an infected Aedes mosquito
Updated: 12 May 2026Yellow fever
Yellow fever is caused by a virus, which circulates between infected monkeys or humans and mosquitoes
Updated: 18 February 2026Preparing for healthy travel
Medicines and travel
Carrying medication abroad and advice regarding falsified medication
Updated: 24 October 2025Travel Insurance
Travellers must declare medical conditions when taking out travel insurance to ensure they are suitably covered
Updated: 06 December 2021Special risk travel/traveller
Travelling with additional needs and/or disability
This factsheet provides an overview and advice on the points to consider when travelling with additional needs and/or disability
Updated: 12 September 2025Areas of humanitarian crisis
For humanitarian aid workers and those advising those travelling to areas of conflict or disaster
Updated: 07 April 2025Clinic resources
'Getting to Grips...' online events and video guides
Online guides and webinar sessions for health professionals interested in travel health
Updated: 08 July 2026Vaccines and medicines: availability, supply, shortages and use of unlicensed medicines
Information for health professionals on availability of vaccines and use of unlicensed products
Updated: 07 July 2026The green book travel chapters
UK Health Security Agency Immunisation against infectious disease, the 'green book' travel chapter updates
Updated: 15 October 2024
