What should you know about hepatitis A inactivated vaccine?

An inactivated vaccine uses virus components that cannot cause hepatitis A infection. After vaccination, the immune system builds a response that can help recognise the virus later. The product, dose timing and eligibility depend on age, health, previous vaccination and local recommendations. Protection is not immediate, so a clinician may advise vaccination before travel or after a relevant exposure when appropriate.

A sore arm, redness, mild fever or tiredness can occur after an injection and usually settles without special treatment. Tell the vaccinator about previous allergic reactions, current illness, pregnancy or medicines that affect immunity so the plan can be checked safely.

Bring any available vaccination record and ask whether a single or combined schedule is suitable. Follow the appointment plan even if a previous dose was delayed; a clinician can explain how to continue. Vaccination does not replace hand hygiene and safe food and water practices. It also does not protect against other infections, which may require separate options such as hepatitis B, typhoid or tetanus vaccination.

Seek urgent medical help for trouble breathing, facial swelling, widespread hives, collapse or severe weakness after vaccination. Contact the vaccination provider about a persistent high fever, worsening injection-site swelling or symptoms that concern you. A mild sore arm or short-lived tiredness can be monitored, but ask for personalised advice if the recipient is very young or has a significant medical condition.

Ask which product and schedule fit your age and travel plans, whether another vaccine can be given at the same visit, what side effects to expect, and what to do if an appointment is missed.