Hepatitis A and Travel: A Guide to Symptoms, Vaccination and Safety for UK Travellers

Hepatitis A is a highly contagious liver infection caused by the Hepatitis A virus (HAV). Unlike Hepatitis B or C, it does not usually cause long-term chronic liver disease, but it can make you feel significantly unwell for several weeks or even months. In the United Kingdom, most cases are 'imported' by travellers returning from countries where the virus is more common due to different sanitation standards.

According to NHS guidance, the virus is primarily shed in the faeces of an infected person. Transmission occurs when someone ingest even microscopic amounts of contaminated matter. This often happens through contaminated drinking water, ice, or food that has been handled by an infected person or washed in untreated water. Shellfish harvested from sewage-contaminated water is another common source of outbreaks for British tourists.

One of the challenges with Hepatitis A is the long incubation period. Symptoms usually appear between 2 and 7 weeks after exposure, meaning many UK travellers do not become unwell until they have returned home. NICE guidelines highlight that children often have very mild symptoms, but adults—particularly older adults—can experience a more severe illness.

Common signs to look out for include:

• Jaundice: A yellowing of the skin and the whites of the eyes.
• Dark urine and pale stools: Often one of the first visible signs of liver distress.
• Extreme fatigue: A sense of exhaustion that can last for weeks.
• Digestive issues: Nausea, vomiting, and pain in the upper right side of the abdomen.
• Loss of appetite: A sudden distaste for food or cigarettes.
• Fever: Usually a mild temperature and flu-like aches.

The most effective way to prevent infection is through vaccination. In the UK, the Hepatitis A vaccine is not part of the routine childhood immunisation schedule but is provided to those at increased risk, including travellers. If you are planning a trip, you should ideally seek advice at least 4 to 6 weeks before departure.

The vaccine is usually given as a single injection. A booster dose, typically administered 6 to 12 months later, provides long-term protection for at least 25 years. Many travellers receive a combined vaccine that protects against both Hepatitis A and Hepatitis B, or Hepatitis A and Typhoid, depending on their itinerary. You can check the specific requirements for your destination on the TravelHealthPro website, which is the platform used by UK clinicians to provide evidence-based travel advice.

While Hepatitis A can occur anywhere, the risk is highest in areas with limited access to clean water and modern sanitation. High-risk regions typically include sub-Saharan and North Africa, parts of the Middle East, South and South-East Asia, and Central and South America. However, outbreaks can also occur in popular European holiday destinations.

Even if you are vaccinated, you should follow strict food and water hygiene rules: "Boil it, cook it, peel it, or forget it."

• Drink only bottled water with an unbroken seal or water that has been boiled.
• Avoid ice cubes in drinks, as they are often made from tap water.
• Avoid salads and raw vegetables that may have been washed in local water.
• Only eat fruit that you have peeled yourself, such as bananas or oranges.
• Ensure shellfish and all meat are served piping hot.
• Wash your hands thoroughly with soap and water after using the toilet and before handling food.

If you have recently returned from abroad and notice symptoms like jaundice or unusually dark urine, it is important to seek medical advice. You can speak to a GP online to discuss your symptoms and travel history. While there is no specific 'cure' for Hepatitis A—the body usually clears the virus on its own—a doctor can arrange for blood tests to confirm the diagnosis and monitor your liver function.

An online consultation is also an excellent way to get pre-travel advice. A GP can review your destination and medical history to recommend which vaccinations or medications you might need. If you are already feeling unwell, a GP can provide guidance on managing symptoms at home, such as using paracetamol for pain (if appropriate for your liver) and ensuring you stay hydrated. They can also provide a sick note if your recovery is prolonged and you are unable to work.

Most people with Hepatitis A feel better within a few weeks, though it is not uncommon for fatigue to linger for several months. During recovery, it is vital to avoid alcohol, as your liver needs time to heal and alcohol puts additional strain on the organ. Your GP may advise you to avoid certain medications that are processed by the liver.

Once you have had Hepatitis A, your body develops lifelong immunity, meaning you cannot catch it again. However, being infected with one type of hepatitis does not protect you against others, such as Hepatitis B or C. Public health officials in the UK are usually notified of cases to ensure that close contacts can be offered vaccination or immunoglobulin to prevent further spread.