The Basics
What is Hepatitis B?
Hepatitis B is a viral infection that attacks the liver and can cause both acute (short-term) and chronic (long-term) disease. It is caused by the Hepatitis B Virus (HBV). Unlike Hepatitis A, HBV is primarily transmitted through contact with infected blood or bodily fluids (such as from a mother to baby during birth, unprotected sexual contact, or shared needles). Chronic Hepatitis B can lead to serious health issues, including cirrhosis and liver cancer.
Vaccination Overview
Prevention Through Vaccination
| Feature | Details |
| Number of Doses | Usually a 3-dose series. (An accelerated 4-dose schedule is sometimes used for rapid travel protection). |
| When to get it | Commonly given to infants at birth, but recommended for all adults at risk, healthcare workers, and travellers to high-risk areas. |
| Boosters | For most healthy individuals, a booster is not routinely recommended once the initial series is complete, as the body maintains "immune memory." |
| How it is given | Administered as an intramuscular injection in the upper arm. |
| Suitable Age | Safe for all ages, starting from birth. |
Safety & Side Effects
Is the Vaccine Safe?
The Hepatitis B vaccine is often called the “first anti-cancer vaccine” because it prevents the primary cause of liver cancer. Side effects are generally very mild:
Local reaction: Soreness, warmth, or redness at the site of the injection.
General: A low-grade fever (usually appearing within 1–2 days).
Rare: Mild fatigue or a headache.
Recognising Symptoms
Symptoms of Hepatitis B
Many people, especially children, have no symptoms when first infected. If symptoms do occur, they usually appear 2 to 5 months after exposure.
Abdominal Pain: Pain in the stomach area, often on the right side.
Dark Urine: Urine that appears tea-coloured or dark orange.
Joint Pain: Aches in the joints similar to the flu.
Jaundice: Yellowing of the skin and eyes.
Chronic Fatigue: Long-lasting tiredness and weakness.
Nausea/Vomiting: Loss of appetite and upset stomach.
Additional Precautions
Staying Safe Beyond Vaccination
While vaccination is the most effective protection, you can reduce risk by:
Safe Practices: Avoiding unprotected sexual contact and the sharing of personal items like razors or toothbrushes.
Medical Safety: Ensuring only sterile needles are used for any medical procedures, tattoos, or piercings.
Testing: If you are at high risk or pregnant, get tested, as early detection can manage the virus effectively.
FAQ
Can Hepatitis B be cured?
There is no cure for acute Hepatitis B, but most adults recover fully. For chronic Hepatitis B, there are highly effective antiviral treatments that can manage the virus and prevent liver damage.
If I had the Hepatitis A vaccine, am I protected against B?
No. They are different viruses. You need specific vaccinations for each, though a “combined” vaccine (Hep A + Hep B) is available.
Medical Disclaimer
The information provided on this website is for educational and informational purposes only and is not intended as medical advice, diagnosis, or treatment. While we strive to provide accurate health information, it is not a substitute for the professional judgment of a healthcare provider. Always seek the advice of your physician or other qualified health professional with any questions you may have regarding a medical condition or vaccination schedule. Never disregard professional medical advice or delay seeking it because of something you have read on this website.