Hepatitis A vaccine use explained

A clinician may recommend vaccination because of travel, living or working circumstances, close contact with someone who has hepatitis A, or a health condition that makes liver infection more concerning. The vaccine is preventive; it does not treat an existing infection or remove symptoms that have already started. Hepatitis A spreads mainly when virus particles enter the mouth through contaminated food, water, hands, or close contact. Vaccination works alongside hand hygiene and safe food and water practices.

Tell the vaccinator about previous vaccine reactions, allergies, pregnancy, immune problems, liver disease, and current medicines. Bring any immunisation record you have so the clinician can check which dose is appropriate. Ask whether you need more than one dose and when to return. After vaccination, stay briefly where staff can observe you, then keep the injection site clean and note any symptoms. If you feel unwell, rest and drink fluids.

Get urgent help for breathing difficulty, throat or facial swelling, widespread hives, collapse, or sudden severe dizziness after vaccination. Arrange medical advice for jaundice, dark urine, ongoing vomiting, or marked loss of appetite. Such symptoms can occur with hepatitis A or another liver problem and should not be assumed to be a normal vaccine response. A clinician may examine you and decide whether a Liver Function Test is appropriate.

Ask why vaccination is advised for you, how the schedule fits your travel or exposure date, whether another vaccine can be given at the same visit, and what to do if a dose is delayed. Ask how to distinguish expected soreness from symptoms needing review.