Hepatitis B Vaccine

Purpose of the Hepatitis B Vaccine

Hepatitis B vaccines provide protection against illness caused by the Hepatitis B Virus (HBV).

Hepatitis B can result in severe liver damage and is transmitted through direct exposure to blood or other bodily fluids from an infected individual. Additionally, transmission can occur through the sharing of things such as toothbrushes or razors with an individual who is infected. An infant born to an infected mother is at risk of acquiring the infection unless appropriate vaccinations are administered.

Typical manifestations of Hepatitis B encompass jaundice (yellowing of the skin or eyes), nausea, vomiting, abdominal discomfort, and joint pain. 


Which individuals are eligible to receive the Hepatitis B vaccine?​

As per the Singapore National Childhood Immunisation Schedule (NCIS), it is recommended that all children take three doses of the vaccine at appropriate intervals. Infants should receive their initial dosage immediately after birth and often finish the series by the age of 6 months. However, in some cases, it may take longer than 6 months to complete the series.

According to the Singapore National Adult Immunisation Schedule (NAIS), adults aged 18 or above who have not received prior vaccination or lack proof of past infection or immunity should be given three doses. The first dose should be followed by the second and third doses, administered one month and six months after the initial dose, respectively.


What precautions should be taken prior to receiving the Hepatitis B vaccine?

Notify your healthcare provider if you have any allergies to this vaccination or any of its components.

  • If you are currently pregnant, intending to conceive, or currently breastfeeding, or if you are currently using any other drugs.
  • You are presently experiencing malaise and exhibiting symptoms of fever.
  • You have a medical background characterised by a predisposition to blood diseases.
  • You possess a compromised immune system, such as being in the midst of chemotherapy treatment.

some of the side effect after taking Hepatitis Vaccine

  • Some people may feel dizzy after receiving the vaccination.
    • To avoid fainting, sit for 15 minutes after receiving the vaccine. 
  • Injection site pain, redness, and swelling 
    • For temporary relief, apply a cold compress to the affected area.
    • You can take paracetamol to relieve pain.
  • Headache
    • You can take paracetamol to relieve pain.
  • Children’s crying, irritability, and sleepiness
    • These side effects usually subside on their own.

Please consult a doctor if these side effects do not improve or worsen. 


some of the Serious side effect after taking Hepatitis B Vaccine and need to seek immediate attention.

What Are Some Rare But Serious Side Effects That Require Immediate Medical Attention?

  • A drug allergy can cause one or more of the following symptoms:
  • Face, eyes, lips, and tongue swelling
  • Difficulties breathing
  • Itchy skin rashes all over your body

If you or your child experience any of these symptoms, you or your child should seek immediate medical attention.

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