Hepatitis B Vaccine: Four Decades on

Area of Science:

• Hepatology
• Immunology
• Public Health

Background:

• Hepatitis B virus (HBV) is a major cause of cirrhosis and hepatocellular carcinoma (HCC) worldwide.
• Vaccination is the most effective preventive measure against HBV infection and its severe consequences.
• Hepatitis B vaccines also prevent hepatitis D virus (HDV) infection.

Purpose of the Study:

• To review hepatitis B vaccine formulations, schedules, and guidelines.
• To discuss vaccine efficacy, durability, and potential challenges like vaccine escape mutants.
• To highlight the clinical and economic advantages of hepatitis B vaccination.

Main Methods:

• Literature review of hepatitis B vaccine research and clinical data.
• Analysis of global vaccination strategies and coverage rates.
• Examination of vaccine effectiveness, immunogenicity, and safety profiles.

Main Results:

• Hepatitis B vaccination, especially at birth, has significantly reduced mother-to-child transmission, chronic HBV, and HCC rates.
• Various vaccine formulations and schedules exist, often in combination with other vaccines.
• Suboptimal global birth dose coverage remains a critical public health concern.

Conclusions:

• Hepatitis B vaccination is a cornerstone of global public health, effectively preventing liver disease and cancer.
• Optimizing vaccine delivery, particularly birth dose coverage, is essential for disease eradication.
• Continued research into vaccine efficacy, durability, and emerging challenges is necessary.