Hepatitis A is an infection of the liver, and is transmitted through contaminated food and water or by direct contact with an infectious person.
Hepatitis A is a highly infectious virus that can cause inflammation of the liver. The virus is usually transmitted through food or water contaminated by human faeces or by direct contact with an infectious person. Hepatitis A is rare in the UK with most cases occurring in travellers who have recently visited countries where the disease is common.
Areas with high levels of infection include low-income countries that may have relatively poor sanitary conditions and hygiene practices. These areas include: the Indian subcontinent, Sub- Saharan and North Africa, parts of the Far East, South and Central America, and the Middle East.
Certain travellers are at increased risk of acquiring hepatitis A, including:
those who are staying with or visiting the local population
frequent and/or long-stay travellers to areas where sanitation and food hygiene are likely to be poor
those with existing medical conditions such as liver disease or haemophilia
men who have sex with men
people who inject drugs
those who may be exposed to the virus through their work
those going to areas of hepatitis A outbreaks who have limited access to safe water and medical care
Symptoms are often mild or absent in young children, but the disease becomes more serious with advancing age. Recovery can vary from weeks to months. Following hepatitis A illness, immunity is lifelong. Possible symptoms include weakness, loss of appetite,tiredness, headache, diarrhoea, fever, nausea and vomiting and dehydration. Jaundice (yellowing of the skin) usually occurs approximately a week later.
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