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Hastings and Prince Edward Public Health

Hepatitis A Vaccine FAQs

What is hepatitis A?

  • Hepatitis A is a highly contagious virus that attacks the liver. It interferes with the liver’s ability to digest food and help to remove waste products from your body.
  • Hepatitis A is most common in developing countries where there may be poor food handling and storage and inadequate water sanitation.

How does hepatitis A spread?

  • The virus spreads easily by eating / drinking contaminated food or water or through direct contact with an infected individual.
  • The best defense against germs is frequent hand washing; wash your hands with soap and water for at least 15 seconds or use alcohol-based hand sanitizers.
  • Follow the advice on the Safe Food and Safe Water Fact sheets.

What are the symptoms of hepatitis A?

  • Some people with hepatitis A have no symptoms, especially children under 5 years of age.
  • If you do have symptoms, they will appear 2 to 7 weeks after becoming infected and may include feeling unwell with fever, nausea and vomiting, followed by jaundice, which is a yellowing of the skin and whites of the eyes.

Is there a cure for hepatitis A?

  • There is no medication to treat or cure hepatitis A, so the symptoms are treated.
  • Most people recover completely after 4 to 6 weeks and become immune to the infection; however, some people, especially the elderly and those with chronic liver problems, can develop serious health problems.

What are the benefits of the hepatitis A vaccine?

  • The hepatitis A vaccine helps to protect children and adults against liver infections caused by the hepatitis A virus.
  • Hepatitis A vaccines are 90 to 97% effective in preventing infections after completion of the series.
  • The second dose of the vaccine series should be given 6 to 12 months after the first dose, with the exception of Avaxim®, which can be given 6 to 36 months after the first dose.
  • A completed vaccine series can protect healthy individuals from hepatitis A for over 20 years.

Who should get the publicly funded (free) hepatitis A vaccine?

  • Individuals 6 months of age or over who are at high risk of becoming infected with hepatitis A
    • those with chronic liver disease, including hepatitis B & C
    • intravenous drug use
    • men who have sex with men

What are the common side effects of hepatitis A vaccine?

  • Some people may feel sore and swollen for a few days where the needle was given and have headaches, fever, nausea and vomiting, or feel tired or unwell for a day or two.
  • Tylenol® or ibuprofen may be taken afterwards, as directed, to reduce discomfort or fever.
  • Children under 19 years of age should not be given ASA, Aspirin® or salicylates.

      Who should not get the hepatitis A vaccine?

      • Anyone who has had a serious allergic reaction to this vaccine in the past, or to any component of the vaccine:
        • Havrix™ 1440 – 19 yrs of age and over – hepatitis A virus, aluminum hydroxide, amino acids, disodium phosphate, monopotassium phosphate, neomycin sulphate, polysorbate 20, potassium chloride, formaldehyde and sodium chloride. May contain latex.
        • Havrix™ 720 Junior – 6 mos. to 18 yrs of age
        • Vaqta® – 18 yrs of age and older – inactivated hepatitis A virus, aluminium sulfate, sodium borate, sodium chloride, trace amounts of bovine albumin, neomycin and formaldehyde. Does contain latex (in the vial stopper).
        • Avaxim® – 12 years of age and older – inactivated hepatitis A virus, 2-phenoxyethanol, formaldehyde, aluminum hydroxide, medium 199 Hanks, polysorbate 80, neomycin, formaldehyde. Does not contain latex.
        • Avaxim® Pediatric – 6 mos. to 15 yrs of age
      • Anyone with a high fever, moderate to severe illness, should wait until they feel well.
      • Pregnant or breastfeeding women should only be vaccinated if it is clearly necessary.

      When should I seek medical attention after immunization?

      • If you or your child experiences any unusual side effects, seek medical attention and notify us.
      • Go to Emergency at a hospital right away or call 911 if you or your child has any of the following after immunization:
        • swelling of the face and neck
        • problems breathing
        • hives and itchy, reddened skin

        Your Record of Protection

        After you receive any immunization, make sure your health care provider updates your personal immunization record. Keep it in a safe place. Please inform us of any immunizations not received from public health.

        Hepatitis A Vaccine Fact Sheet printable pdf

        Need More Information About Hepatitis A Vaccine FAQs?

        Talk to your health care provider or call our Immunization Program at 613-966-5500 or 1-800-267-2803, ext. 221.

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