Protection that helps keep children healthy and prevents serious liver complications
Hepatitis A is a virus that affects the liver and can cause sudden illness. It spreads through contact with the feces of an infected person—for example, during diaper changes—or through contaminated food or water. Many people who are infected may not show any signs or symptoms, but they can still spread the virus to others.
In some cases, hepatitis A may cause yellowing of the skin and eyes, stomach pain, vomiting, and, rarely, complications involving the liver, kidneys, pancreas, or blood. While most people recover fully, hepatitis A can be serious, especially for young children or individuals with other health concerns.
At Marshfield Clinic, our Family Medicine and Pediatric providers help families stay on schedule with routine vaccines that protect against hepatitis A and other preventable illnesses.
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Symptoms
Hepatitis A may cause:
- Yellowing of the skin and eyes (jaundice)
- Stomach pain
- Vomiting
- Fever
- Fatigue
- Loss of appetite
Some infected individuals may have no symptoms at all.
Possible complications
Though uncommon in children, hepatitis A can lead to:
- Liver inflammation
- Kidney disorders
- Pancreatic issues
- Blood disorders
- Rare cases of liver failure
Vaccination greatly reduces the risk of illness and complications.
Who's most at risk?
Hepatitis A most often affects:
- Unvaccinated young children
- People traveling to countries where hepatitis A is more common
- Those who may be exposed through contaminated food or water
Vaccine recommendations
All children should receive two doses of the hepatitis A vaccine, starting at 1 year of age.
Your child’s provider will follow the recommended schedule to ensure strong, lasting protection.
How Marshfield Clinic supports you
Our care teams help families:
- Understand when and why vaccines are recommended
- Stay on schedule with well-child visits
- Make informed decisions with support from trusted providers
We’re here to make routine immunizations easy and stress-free.
Frequently asked questions
Is the hepatitis A vaccine safe?
Yes. The vaccine has been used for many years and is closely monitored for safety.
Can adults get hepatitis A?
Yes. Adults can become infected and can spread the virus, even without symptoms. Your provider can help determine if adult vaccination is recommended before travel or based on health risks.