United States Department of Veterans Affairs
United States Department of Veterans Affairs
National Hepatitis C Program
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Basics

After you are vaccinated, how long will you be protected against the virus?

If you are vaccinated and develop antibodies, you will be protected against hepatitis A for at least 20 years. If you are unsure if you were vaccinated, ask your doctor to check to see if you have antibodies in your body to protect you against the virus.