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Hepatitis B

乙型肝炎疫苗

The HK childhood immunisation success story. Nearly all HK residents born after 1988 are already vaccinated.

Who it's for
Infants under the HK Childhood Immunisation Programme: three doses at birth, 1 month, and 6 months.
Schedule
Standard 3-dose schedule: 0, 1 month, 6 months.
Products
2 products
Engerix-B · HBVAXPRO

What is it?

Hepatitis B is a virus that infects the liver. Chronic infection causes cirrhosis and liver cancer years later. HK is historically a high-prevalence area.

HK launched a universal infant vaccination programme in 1988. Coverage is now 99% among pre-school children, and hepatitis B prevalence in HK residents under 35 has dropped below 1%.

The vaccine uses recombinant hepatitis B surface antigen — no live virus, no risk of infection from the shot.

HK Department of Health recommendation

Infants under the HK Childhood Immunisation Programme: three doses at birth, 1 month, and 6 months.

Adults who were not vaccinated as infants — relevant for adults born before 1988, or those from places without universal programmes. Catch-up vaccination is available privately.

International reference (US CDC)

US CDC recommends hepatitis B vaccination for all infants and for all unvaccinated adults 19-59.

Schedule

Standard 3-dose schedule: 0, 1 month, 6 months.

Accelerated adult schedule: 0, 1 month, 2 months, with booster at 12 months — for faster protection.

HK-registered products

BrandManufacturerHK Reg No.
Engerix-B · Recombinant hepatitis B surface antigenGSK
HBVAXPRO · Recombinant hepatitis B surface antigenMSD (Merck)

Side effects

Sore arm, mild fever, tiredness, headache. Lasts 1-2 days. Hepatitis B vaccine has one of the longest safety records of any modern vaccine.

Common myths

  • Myth: I'm an adult now, so it's too late to vaccinate.

    Reality: Not true. Adult catch-up vaccination produces protective antibody levels in around 95% of healthy adults after the full 3-dose course.

Where to get it

  • Infants: automatic under the Childhood Immunisation Programme
  • Adults seeking catch-up vaccination: see your GP
  • Pre-travel: GP or travel health clinic

Packages & prices

Checked weekly against each provider's own published prices.

Prices and terms change often and many are limited-time promotions — confirm the current price and availability with the provider before booking. hkvaccines.com is independent: we take no payment for bookings or placement.

Sources

Last reviewed: 2026-06-16

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Related questions

Is natural immunity better than vaccine immunity?What's actually in a vaccine, and are the ingredients (aluminium, preservatives) harmful?Is "too many vaccines too soon" harmful for babies?How long should I wait between vaccine doses?What should I do if I miss a dose?What vaccines should healthcare workers in HK have?What vaccines should I get before travelling from Hong Kong?What vaccines do I need for Southeast Asia (Thailand, Vietnam, etc.)?What vaccines do I need to travel to India or South Asia?

The recommender

Answer six short questions to see which vaccines are worth discussing with your GP, and why.

Based on your age, health, and travel plans, using HK Department of Health and CDC guidance. A ranked list of vaccines, with the reason each one applies to you.

01

Rule-based

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02

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03

Explained

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