Hepatitis B Vaccine for Travel — Australian Guide

Overview

Protects against hepatitis B virus infection, transmitted through blood and bodily fluids.

Part of the Australian National Immunisation Program (NIP) for all infants. Recommended for unvaccinated adult travellers, especially those travelling to high-prevalence regions or engaging in activities with risk of blood or bodily fluid exposure.

Vaccination Schedule

Standard schedule: 3 doses: 0, 1, and 6 months

Accelerated schedule: Twinrix accelerated schedule: 0, 7, 21 days + 12-month booster. Engerix-B accelerated: 0, 1, 2 months + 12-month booster.

Route: Intramuscular injection

Brands Available in Australia (TGA-Registered)

Engerix-B (GSK)
H-B-Vax II (MSD)
Twinrix (GSK) — Combined Hepatitis A + B
Infanrix Hexa (GSK) — Combined DTaP-IPV-HepB-Hib (paediatric)

Cost in Australia

Estimated cost: $40-$70 per dose

Medicare/PBS: Funded under NIP for all infants (birth dose + primary course). Not funded for adult travellers. Available on private prescription. Funded for high-risk groups including healthcare workers and Aboriginal and Torres Strait Islander people.

Efficacy & Duration

Efficacy: Greater than 95% seroprotection after 3-dose course in healthy adults under 40

Seroprotection rates exceed 95% in healthy adults under 40 years. Response rates decline with age, obesity, smoking, and immunosuppression. Anti-HBs titre of 10 mIU/mL or above is considered protective.

Duration of protection: Long-lasting, likely lifelong for immunocompetent individuals who achieve initial seroprotection. Boosters not routinely recommended.

Side Effects

Side Effect	Frequency
Injection site pain, redness, swelling	Very common (>50%)
Fatigue, headache, irritability	Common (10-50%)
Fever (>37.5C), nausea, dizziness	Uncommon (1-10%)

Contraindications

Severe allergic reaction (anaphylaxis) to a previous dose or vaccine component (including yeast)
Severe illness (defer vaccination)

Special Populations

Pregnancy

Category B2. Inactivated vaccine; can be given in pregnancy if indicated. Recommended if at high risk of exposure.

Children

Part of NIP for all infants. Birth dose of monovalent Hepatitis B vaccine given within 24 hours. Subsequent doses given as Infanrix Hexa at 2, 4, and 6 months of age.

Immunocompromised Travellers

Safe to administer. Higher dose (40 mcg) or additional doses may be required. Post-vaccination serology essential to confirm anti-HBs >= 10 mIU/mL. Non-responders may need up to 3 additional doses.

Frequently Asked Questions

Do I need Hepatitis B vaccination for travel?

If you were born in Australia after 2000, you likely received Hepatitis B vaccination as an infant under the NIP. Check your immunisation history. For unvaccinated adults, it is recommended for travel to high-prevalence areas in Asia, Africa, and the Pacific.

How is Hepatitis B different from Hepatitis A?

Hepatitis A spreads through contaminated food and water. Hepatitis B spreads through blood and bodily fluids, including unprotected sexual contact, shared needles, tattoos, and medical procedures with unsterile equipment. Both can be prevented by vaccination.

Can I get Hepatitis A and B in one vaccine?

Yes. Twinrix is a combined Hepatitis A and B vaccine available in Australia. It saves time and injections. The standard schedule is 3 doses over 6 months, with an accelerated option of 0, 7, 21 days plus a 12-month booster.

How much does Hepatitis B vaccine cost in Australia?

For adult travellers, Hepatitis B vaccine costs approximately $40-$70 per dose on private prescription. A full 3-dose course costs $120-$210 plus consultation fees. The combined Twinrix vaccine may be more cost-effective if you need both Hepatitis A and B.

Do I need a booster for Hepatitis B?

No. If you completed the full course and achieved seroprotection (anti-HBs >= 10 mIU/mL), boosters are not routinely recommended. Immune memory persists even after antibody levels decline. Your doctor may recommend serology testing if you are at ongoing risk.

What if I was vaccinated as a baby -- am I still protected?

Most likely yes. Studies show that people vaccinated in infancy retain immune memory for at least 30 years, even if anti-HBs antibody levels are no longer detectable. Boosters are not routinely recommended for immunocompetent individuals.

Is Hepatitis B vaccine safe during pregnancy?

Yes. Hepatitis B vaccine is an inactivated vaccine classified as Category B2. It can be safely given during pregnancy, particularly if the woman is at risk of exposure. It does not contain live virus.

What happens if I miss a dose in the Hepatitis B schedule?

You do not need to restart the course. Resume from where you left off. The minimum intervals between doses should be maintained (4 weeks between dose 1 and 2, 8 weeks between dose 2 and 3), but there is no maximum interval.

Hepatitis B Vaccine