Infectious diseases
- Chikungunya
- Cholera
- Dengue
- Hepatitis A
- Hepatitis B
- Influenza (flu)
- Japanese encephalitis
- Malaria
- Meningococcal disease
- Pertussis (whooping cough) and travel
- Poliomyelitis
- Rabies
- Schistosomiasis
- Sex and travel: sexually transmitted infections
- Tick-borne encephalitis
- Travellers' diarrhoea
- Typhoid and paratyphoid
- Viral haemorrhagic fever
- West Nile virus
- Yellow fever
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 2026
Chikungunya
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 2026
Yellow fever
Yellow fever is caused by a virus, which circulates between infected monkeys or humans and mosquitoes
Updated: 18 February 2026Preparing for healthy travel
- Diseases spread by insects and ticks in Europe
- Diseases spread by insects and ticks in the American continent (the Americas)
- First aid kits
- Food and water hygiene
- General travel advice
- Insect and tick bite avoidance
- Medicines and travel
- Personal safety
- Snake bites and avoidance
- Summer travel: advice for students and young holidaymakers
- Sun protection
- Travel Insurance
- Travelling for Carnival
- Venous thromboembolism
- Zika virus: Evaluating the risk to individual travellers
Medicines and travel
Carrying medication abroad and advice regarding falsified medication
Updated: 24 October 2025
Food and water hygiene
Advice on avoiding food and water-borne diseases
Updated: 23 October 2025
Travel Insurance
Travellers must declare medical conditions when taking out travel insurance to ensure they are suitably covered
Updated: 06 December 2021Special risk travel/traveller
- Altitude illness
- Areas of humanitarian crisis
- Asplenia and hyposplenia
- Breastfeeding and bottle feeding
- Children
- Coagulation disorders
- Cruises
- Diabetes
- Extreme heat
- Flooding
- Gastrointestinal disorders
- Hajj and Umrah
- HIV and AIDS
- Immunosuppression
- Kidney (renal) conditions
- Liver conditions
- Mass gatherings
- Neurological conditions
- Older travellers
- Pregnancy
- Respiratory conditions
- Rheumatology conditions
- Sickle cell disease and thalassaemia
- Supporting travellers with obesity
- Travel and mental health
- Travel with a stoma
- Travelling for treatment (medical tourism)
- Travelling to visit friends and relatives
- Travelling with additional needs and/or disability
- Volcanoes
- Wildfires and industrial fires
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 2025
Extreme heat
Advice when travelling to areas with extreme heat
Updated: 09 May 2025
Areas 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
- Checking drug interactions
- Country-specific information: Rationale
- Female genital mutilation (FGM)
- General immunisation
- Interrupted vaccination schedules: general principles
- LGBT travellers: changes to vaccine certificates
- Malaria resources
- Management and reporting of adverse events
- Medicines management
- Polio vaccination certificate
- Risk assessment / Risk management checklist
- Standards in travel medicine
- The green book travel chapters
- Travel health infographics
- Vaccines and medicines: availability, supply, shortages and use of unlicensed medicines
- Yellow fever pre-vaccination checklist
- Yellow fever vaccine: contraindications and precautions reminder
- Yellow fever: Information for travellers leaflet
Vaccines and medicines: availability, supply, shortages and use of unlicensed medicines
Information for health professionals on availability of vaccines and use of unlicensed products
Updated: 08 June 2026
'Getting to Grips...' online events and video guides
Online guides and webinar sessions for health professionals interested in travel health
Updated: 05 May 2026
The green book travel chapters
UK Health Security Agency Immunisation against infectious disease, the 'green book' travel chapter updates
Updated: 15 October 2024
