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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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        South East Health Unit

        As of Jan. 1, 2025 Hastings Prince Edward Public Health; Kingston, Frontenac and Lennox & Addington Public Health and the Leeds, Grenville and Lanark District Health Unit will merge to form the South East Health Unit.

        Partners and members of the public should continue to engage with their local public health offices as usual until otherwise directed.

        Efforts are underway to develop branding for the South East Health Unit, which will take several months. In the meantime, you will see logos and other advertising material with Hastings Prince Edward Public Health branding. You may also see some documents using the legal name South East Health Unit.