Hepatitis A: Symptoms, Causes, Transmission and Prevention

Doctor holding a card with text HEPATITIS A

Hepatitis A is a short-term but highly contagious liver infection. It’s not very common in the UK, but if you’re travelling abroad or in close contact with someone who has it, it’s important to understand how it spreads—and how you can protect yourself.

In this guide, we’ll walk you through the symptoms, causes, transmission, and best steps for prevention of hepatitis A. Whether you’re heading overseas or just want to know more, this blog covers everything.

What is Hepatitis A?

Hepatitis A is a viral infection that causes inflammation of the liver. It’s caused by the hepatitis A virus (HAV) and spreads mostly through contaminated food, drink, or close personal contact.

Unlike hepatitis B or C, hepatitis A doesn’t lead to long-term liver problems. Most people recover within a few weeks or months without any serious issues. Still, it can make you feel unwell and can be dangerous for people with pre-existing liver conditions.

Hepatitis A Symptoms

Some people—especially young children—might not show any signs at all. But if symptoms do show, they tend to pop up 2 to 6 weeks after catching the virus.

Common hepatitis A symptoms include

  • Feeling tired or run down
  • Nausea or vomiting
  • Loss of appetite
  • Fever
  • Joint and muscle aches
  • Pain or discomfort in the upper right of your tummy (where your liver is)
  • Dark-coloured urine
  • Pale or grey poo
  • Itchy skin or raised rash (hives)
  • Yellowing of the skin or eyes (jaundice)

These symptoms can range from mild to severe and usually last up to two months, but sometimes longer.

Hepatitis A Causes

The infection is caused by the hepatitis A virus, which is found in the stool (poo) and blood of someone who’s infected. You can get it by swallowing even tiny amounts of contaminated matter.

How Do You Get Hepatitis A?

Wondering how you contract the hepatitis A virus or how you catch hepatitis A? Here are the most common ways:

Hepatitis A transmission happens through

  • Drinking water that hasn’t been properly treated
  • Eating food washed or grown in contaminated water
  • Eating food handled by someone with hepatitis A who hasn’t washed their hands
  • Close personal contact, including sexual contact
  • Sharing needles or drug equipment
  • Living or working in areas with poor sanitation

So yes, how hepatitis A is transmitted often comes down to hygiene, or lack of it.

Who’s at Risk of Hepatitis A?

You’re more at risk if you:

  • Are travelling to high-risk countries in Asia, Africa, Central or South America
  • Live or work in crowded or unhygienic conditions
  • A man who has sex with men
  • Inject drugs or share needles
  • Work in healthcare, sewage, or homeless shelters
  • Have a weakened immune system or existing liver disease

Hepatitis A Treatment

There’s no specific hepatitis A treatment. Most people recover naturally with rest, fluids, and good nutrition.

If you have hepatitis A

  • Stay home from work or school for at least a week after symptoms start
  • Drink lots of water and avoid alcohol
  • Eat smaller meals if you feel nauseous
  • Keep your environment cool and wear loose clothing to ease itching
  • Wash your hands often and avoid preparing food for others

If symptoms are severe or don’t improve, see your GP. Some people may need medication to manage things like nausea or itching.

Hepatitis A Vaccination and Prevention

How to Prevent Hepatitis A

  • Get the hepatitis A vaccination
  • Wash your hands thoroughly after using the toilet and before eating or cooking
  • Drink bottled or boiled water when travelling
  • Avoid raw or undercooked shellfish and street food in high-risk areas
  • Practice safe sex and avoid sharing personal items

Hepatitis A Vaccine

One of the best ways to stay protected is with the hepatitis A vaccine.

Hepatitis A vaccine—how long before travel should you get it?

You should ideally get vaccinated at least 2 weeks before travelling. The vaccine is usually given in two doses: the first offers protection within a few weeks, and the booster (6–12 months later) provides long-term protection for up to 20 years or more.

How long does the vaccine for hepatitis A last?

  • After two doses: 20+ years of protection
  • After one dose: Up to 1 year of short-term protection

You can book your hepatitis A vaccination at the Private Medical Clinic if you're planning a trip.

FAQs About Hepatitis A

What are the early symptoms of hepatitis A?

Early hepatitis A symptoms are often mistaken for general flu or stomach bugs. These may include fatigue, mild fever, loss of appetite, nausea, tummy discomfort (especially on the upper right), and muscle aches. As the infection progresses, more specific signs like jaundice (yellowing of the skin and eyes), dark urine, pale stools, and itchy skin may appear. Some people, especially young children, may show no symptoms at all.

Can hepatitis A be dangerous or lead to complications?

While most people recover without treatment, hepatitis A can occasionally lead to acute liver failure, especially in older adults or people with existing liver problems. In rare cases, a liver transplant may be needed. However, long-term liver damage (chronic hepatitis) does not occur with hepatitis A.

How is hepatitis A diagnosed?

Diagnosis is usually done through:

  • Blood tests that detect specific antibodies (IgM anti-HAV), which confirm recent or current infection
  • Liver function tests to measure enzymes like ALT and AST, which indicate liver inflammation
  • A physical exam to check for signs of jaundice or liver tenderness

What is the hepatitis A treatment, and how do you recover?

There’s no cure or specific antiviral for hepatitis A. Hepatitis A treatment involves supportive care:

  • Rest and plenty of fluids
  • Small, light meals to ease nausea
  • Avoiding alcohol and drugs that strain the liver
  • Taking pain relief (e.g., paracetamol or ibuprofen) under medical advice

Recovery usually takes a few weeks to two months, but some people feel unwell for up to six months.

Is the hepatitis A vaccine available on the NHS?

Yes, but it’s not given routinely. It’s available free on the NHS for people considered high-risk, such as:

  • Travellers to high-risk countries
  • People with chronic liver disease
  • Close contacts of infected individuals
  • Certain workers (e.g., sewage or healthcare)

What should I do if I think I’ve been exposed to hepatitis A?

If you think you’ve been exposed:

  • Contact your GP or a travel clinic immediately
  • You may be given a hepatitis A vaccine or an immune globulin injection within 14 days of exposure to help prevent infection

Can you get hepatitis A more than once?

No. Once you’ve recovered from hepatitis A, you develop lifelong immunity. However, if you’ve never had the infection or the vaccine, you remain at risk.

Final Thoughts

Hepatitis A may not be common in the UK, but it’s still something to take seriously, especially if you’re travelling abroad or work in healthcare. The good news is that it’s entirely preventable with good hygiene and the hepatitis A vaccine.

If you’re concerned about your risk, travelling soon, or showing symptoms, speak to one of our GPs at Private Medical Clinic. We offer a wide range of routine vaccinations, travel health vaccinations, and full screening options to keep you safe wherever you are.

Latest blog posts

happy girl tourist wearing face medical mask
Awareness

Stay Healthy on the Go: Essential Health Tips for Travellers

Travelling can be one of life's greatest joys, but it also comes with its own set of health challenges. Whether you're an occasional holidaymaker or a frequent flyer, maintaining your health while on the move is crucial.
Young man sitting by the bed and ignoring his girlfriend who is arguing with him
Sexual Health

Common Myths About Sexual Health

Sexual health is a critical aspect of overall well-being, yet it is often surrounded by misinformation and myths that can lead to unnecessary health risks.
A girl is going for a sleeping
Awareness

Unlock Better Sleep: Essential Tips for Improving Sleep Hygiene

A good night’s sleep is foundational to both physical health and mental well-being, yet many struggle to achieve restful slumber consistently.
Doctor telling patient about blood test results
Awareness

Decoding Your Blood Test: A Guide to Understanding Your Results

Blood tests are a fundamental part of any routine health check-up and are crucial for monitoring overall health and diagnosing diseases.
NHS & Private GP
Private GP

NHS GP vs Private GP: Which One Is Right for You?

Choosing between an NHS GP and a Private GP is a significant decision that can impact your healthcare experience.
3 Men drinking alcohol
Health

Alcohol on the Body: What You Need to Know

Alcohol consumption is a common part of social gatherings and celebrations, but its effects on the body are far-reaching.