Travel Health Information Sheets
Updated September 2011
Hepatitis A is a virus that causes inflammation of your liver. It is caught by eating or drinking contaminated food or water.
Hepatitis A virus (HAV) is found all over the world, but is more common in parts of Africa, Asia and Central and South America. The World Health Organization (WHO) estimates there are 1.4 million cases worldwide every year.
Map from Health Information for Overseas Travel
HAV can spread between people living in conditions where they cannot guarantee good hygiene. For most travellers, exposure to HAV is from eating food or drinking water/fluids contaminated with human faeces. Certain foods, like shellfish or salads, can be contaminated with HAV. Food can also be contaminated if someone preparing or serving food is carrying HAV and does not follow basic hygiene rules.
Adults injecting illegal drugs or practising sexual activities involving faecal/oral contact are at increased risk. In the United Kingdom (UK) improved living standards and good sanitation mean that HAV is now rare and often linked to overseas travel.
Signs and symptoms
After exposure to HAV, it takes two to six weeks before symptoms develop. In young children, HAV usually causes a mild illness, but can still be infectious to other people. If you do become unwell, symptoms usually start about four weeks after exposure to the virus and include:
- Loss of appetite
- Nausea and vomiting
- Stomach pain
- Weight loss
- Pale stools (faeces) and dark urine
- Yellow skin and eyes (jaundice)
- Occasional rash and joint pains
If you are young and fit, you are likely to make a complete recovery, usually in about a month, although you could remain ill and infectious for many weeks. Complications can include liver failure, which can be fatal. Older people and those who already have a medical condition or problem with their liver are more likely to become seriously ill.
There is no specific treatment or drug, just supportive therapy.
There is a safe and effective vaccine readily available in the UK which can be given to adults and children from the age of one year. Two injections given six months apart provide at least 20 years protection against HAV.
Hepatitis A vaccine is should be offered to you routinely if you are likely to come into contact with HAV because of activities in your personal life, your behaviour or your work, or if you have an existing illness such as liver disease or haemophilia (problems with blood clotting).
The chance of catching HAV is low for most travellers. Visiting your friends and family, longer trips and staying in places with poor sanitation facilities all increase your risk.
To view PDF files you will require Adobe® Acrobat® Reader