Hepatitis A is caused by infection with the hepatitis A virus (HAV) and results in inflammation of the liver. It is highly contagious, affects 1.4 million people worldwide every year, and is the most common vaccine preventable disease in travellers.
The symptoms of hepatitis A may range in severity. Babies and young children often experience no obvious signs or symptoms, while older children may show symptoms. The disease is more severe in adults with illness lasting several weeks and recovery taking several months. The risk of death from hepatitis A infection increases with age.
- Fatigue
- Nausea
- Vomiting
- Fever and chills
- Pain in the abdomen including the liver area
- Jaundice (yellow skin and eyes)
- Dark urine
- Pale-coloured stools
Hepatitis A is most commonly transmitted by eating or drinking food or water contaminated by infected sewage or faeces. It may also be spread by close contact with an infected person, for example someone with whom you live, or occasionally through sexual contact. Important sources of infection are:
- Shellfish from sewage polluted beds
- Contaminated raw fruit and vegetables
- Contaminated milk and milk products
- Pollution of water sources
Who is at most risk?
A number of groups are considered to be at increased risk. These include:
- Overseas travellers visiting the high-risk areas detailed below
- People in contact with someone infected with the hepatitis A virus
- Injecting drug users
- Homosexual men
Where are you at risk?
Hepatitis A is found worldwide but it is most prevalent in any area where sanitary conditions are poor and especially in…
- Africa
- Asia
- Central America and Caribbean
- Countries of the former Soviet Union
- Eastern Mediterranean and the Middle East
- Indian subcontinent
- South America