People aged ≥1 year are recommended to receive hepatitis A vaccine if they travel to moderately to highly endemic areas for hepatitis A.6 This includes expatriates, and people who are visiting friends and relatives.
1 dose of a monovalent hepatitis A vaccine provides protective levels of antibodies against hepatitis A virus.7 A 2nd dose is recommended 6–12 months after the 1st dose, to increase the duration of protection.
If the person travelling is also at risk of acquiring hepatitis B, they can receive a combination hepatitis A/hepatitis B vaccine. This is usually given in 3 doses. Travellers aged 1 to <16 years can receive a 2-dose schedule using Twinrix 720/20 (minimum 6 months interval between doses).
Travellers aged ≥16 years can receive hepatitis A/hepatitis B vaccine in a ‘rapid’ schedule if there is limited time before departure.8 This consists of a single dose on each of:
day 0
day 7
day 21
12 months
The 4th dose is important to ensure longer-term protection.
To provide longer-term protection against hepatitis A in travellers who previously received a combination hepatitis A/typhoid vaccine, at a minimum of 6 months later, give 1 dose of a monovalent adult formulation hepatitis A vaccine.