HAV (Hepatitis A): Transmission, Prevention, and Why Testing Matters

Hepatitis A, also known as HAV, is a viral infection that affects the liver. Although most people recover completely, the infection can still make you feel very sick for several weeks or even months.

Symptoms such as fever, fatigue, nausea, stomach pain, and yellowing of the skin or eyes (jaundice) can make it difficult to carry out your daily activities. The good news is that hepatitis A is preventable.

Knowing how the virus spreads, how to protect yourself, and when to get tested can help reduce the risk of infection for both you and those around you. Hepatitis A is caused by the hepatitis A virus (HAV), which attacks the liver.

Unlike hepatitis B or hepatitis C, hepatitis A does not usually become a long-term or chronic illness. Most people recover without permanent liver damage, but it is still important to receive the right medical care if you develop symptoms.

In Indonesia, hepatitis A is mainly spread through contaminated food and water, as well as close contact with someone who is infected. Because the virus spreads easily, good hygiene and food safety are key to preventing infection.

How Does Hepatitis A Spread?

HAV spreads through what doctors call the fecal-oral route. This means the virus enters the body when a person accidentally swallows tiny amounts of the virus from contaminated food, water, or surfaces.

Common ways hepatitis A can spread include:

• Eating food prepared by someone who did not wash their hands properly.
• Drinking contaminated water.
• Eating raw or undercooked food that contains the virus.
• Sharing eating utensils, cups, or drinks with an infected person.
• Living with or caring for someone who has hepatitis A.

One important thing to know is that people can spread the virus before they even realize they are sick. This makes hepatitis A highly contagious, especially in places where many people live, work, or eat together.

In Indonesia, outbreaks have often been linked to poor hand hygiene, inadequate sanitation, and shared eating or drinking utensils. Schools, dormitories, and other crowded environments can increase the risk of transmission.

How Can You Prevent Hepatitis A?

The best way to protect yourself is by combining vaccination with healthy daily habits.

Get Vaccinated

The hepatitis A vaccine is the most effective way to prevent infection. It helps your body build protection against the virus before you are exposed.

Your doctor may recommend vaccination if you are traveling, work in healthcare, have a higher risk of exposure, or simply want long-term protection.

Wash Your Hands Properly

Handwashing is one of the easiest and most effective ways to stop the spread of hepatitis A. Always wash your hands with soap and clean water:

• After using the bathroom.
• Before eating or preparing food.
• After changing diapers.
• After caring for someone who is sick.

Good hand hygiene protects not only you but also your family and community.

Practice Safe Food and Water Habits

Since hepatitis A can spread through contaminated food and water, it is important to:

• Drink clean and safe water.
• Eat food that has been cooked thoroughly.
• Wash fresh fruits and vegetables before eating them.
• Be cautious when eating food from places where hygiene may be poor.

These simple habits can greatly lower your risk of infection.

Avoid Sharing Personal Items

If someone around you has hepatitis A, avoid sharing utensils, drinking glasses, bottles, or other items that come into contact with the mouth until they have fully recovered.

Why Is Hepatitis A Testing Important?

Your doctor may recommend a hepatitis A test if you have symptoms or if you have recently been in close contact with someone who has the infection. Common symptoms include:

• Yellowing of the skin or eyes (jaundice)
• Fever
• Feeling very tired
• Nausea or vomiting
• Loss of appetite
• Pain or discomfort in the upper right side of the abdomen
• Dark-colored urine

Because these symptoms can also be caused by other liver conditions, a blood test is the best way to confirm whether hepatitis A is the cause. Getting tested early also helps prevent the virus from spreading to family members, coworkers, or others you have been in close contact with.

What Do the Test Results Mean?

Hepatitis A is diagnosed through a blood test that looks for antibodies made by your immune system. There are two main types of hepatitis A antibodies:

• IgM anti-HAV indicates a current or recent hepatitis A infection. This is the main test doctors use to diagnose an active infection.
• IgG anti-HAV shows that you have had hepatitis A in the past or have been vaccinated. It usually means you are protected against future infection rather than currently sick.

Your doctor may also recommend liver function tests to check how well your liver is working during the illness.

When Should You See a Doctor?

You should see a doctor if you develop symptoms of hepatitis A, especially if you have recently traveled, eaten contaminated food or water, or been in close contact with someone who has the virus. Early testing can provide a clear diagnosis, help your doctor monitor your recovery, and reduce the risk of passing the infection to others.

At Bali International Hospital, our experienced healthcare team offers comprehensive consultations and reliable laboratory testing to help diagnose hepatitis A quickly and accurately. If you are experiencing symptoms or believe you have been exposed to HAV, contact us to speak with our medical team or book an appointment for a consultation and appropriate testing.

Early diagnosis and proper care can help you recover safely while protecting your loved ones and the community.

Frequently Asked Questions (FAQs)

How do people get hepatitis A in Indonesia?

Hepatitis A spreads when the virus enters your body through contaminated food, water, or unwashed hands. You can also become infected by sharing food, drinks, or utensils with someone who has the virus, or by having close contact with an infected person.

Poor sanitation and unsafe food or water increase the risk. In some cases, hepatitis A can also spread through certain types of sexual contact or, more rarely, through shared needles.

Who should get tested for HAV?

You should consider getting tested if you have symptoms such as yellow skin or eyes, fever, fatigue, nausea, stomach pain, or dark-colored urine. Testing is also recommended if you have been in close contact with someone who has hepatitis A, traveled to an area with recent outbreaks, or think you may have eaten contaminated food or water.

How can I protect myself from hepatitis A?

The best way to prevent hepatitis A is by getting vaccinated. You can also lower your risk by washing your hands with soap, drinking safe water, eating well-cooked food, washing fruits and vegetables, and avoiding sharing personal items like utensils or drinking glasses.

Why do I need an HAV test?

An HAV test helps your doctor find out whether you have a current hepatitis A infection or have had it in the past. The results help confirm the diagnosis, guide your treatment, and reduce the risk of spreading the virus to others.