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Prospects for hepatitis B virus eradication and control of hepatocellular carcinoma
1Department of Pediatrics and Internal Medicine, College of Medicine, National Taiwan University, Taipei.
Insights
Universal Hepatitis B vaccination programs are highly effective in preventing chronic hepatitis B infection and reducing liver cancer rates, especially when integrated into childhood immunization schedules. These programs significantly lower carrier rates and disease incidence in endemic regions.
Area of Science:
- Hepatology
- Immunology
- Public Health
Background:
- Hepatitis B virus (HBV) infection is a primary cause of chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma globally.
- HBV transmission occurs perinatally (maternal) or horizontally (intrafamilial spread, unsterilized needles).
- Complications predominantly affect adults in hyperendemic regions.
Purpose of the Study:
- To evaluate the effectiveness of universal Hepatitis B vaccination programs.
- To advocate for the integration of Hepatitis B vaccination into routine childhood immunization.
Main Methods:
- Analysis of HBV infection prevalence and disease incidence data before and after universal vaccination implementation.
- Review of vaccination strategies, comparing universal programs with at-risk group immunization.
Main Results:
- Universal Hepatitis B immunization significantly reduced HBV carrier rates by tenfold in highly endemic areas.
- Incidence of hepatocellular carcinoma in children decreased substantially following vaccination programs.
- Universal vaccination proved more effective than targeting at-risk groups.
Conclusions:
- Universal Hepatitis B vaccination is a highly effective strategy for disease control.
- Integration into Expanded Programme on Immunization is recommended for children.
- Continued global implementation will likely reduce HBV-related liver cirrhosis and cancer.
Abstract:
Hepatitis B virus infection is the most common cause of chronic hepatitis, liver cirrhosis and hepatocellular carcinoma worldwide. In areas hyperendemic for HBV infection, the related complications occur mostly during adulthood. However, nearly half of all primary infection in chronic carriers occurs in the perinatal period through maternal transmission, the other half arising from horizontal transmission mainly through intrafamilial spread or injection using unsterilized needles. A universal vaccination programme is better than immunization for at-risk groups. Hepatitis B vaccination should be integrated into the Expanded Programme on Immunization in children. Universal immunization against hepatitis B virus has proved to be effective in reducing the hepatitis B carrier rate to one-tenth of the prevalence before the vaccination programme in highly endemic areas, and the incidence of hepatocellular carcinoma in children has also been shown to be significantly reduced. Continued efforts to implement universal vaccination programmes worldwide will very likely reduce the incidence of hepatitis B virus-related diseases, particularly liver cirrhosis and hepatocellular carcinoma.