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Hepatitis B virus infection.

Mei-Hwei Chang1

  • 1Department of Pediatrics, National Taiwan University Hospital, 7F, No 7 Chung-Shan South Road, Taipei 100, Taiwan. mhchang@ha.mc.ntu.edu.tw

Seminars in Fetal & Neonatal Medicine
|March 6, 2007
PubMed
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Hepatitis B virus (HBV) infection is a global health concern. Prevention through maternal screening, infant vaccination, and immunoglobulin is the most effective control strategy, significantly reducing HBV infection and related diseases.

Area of Science:

  • Hepatology
  • Immunology
  • Public Health

Background:

  • Hepatitis B virus (HBV) infection poses a significant global health challenge, leading to severe liver conditions like cirrhosis and hepatocellular carcinoma (HCC).
  • Mother-to-infant transmission is a primary driver of chronic HBV infection, particularly in endemic regions, with high persistence rates if infected in infancy.
  • While antiviral treatments exist for chronic hepatitis B, prevention remains the most effective control measure.

Purpose of the Study:

  • To highlight the critical role of prevention strategies in controlling Hepatitis B virus (HBV) infection.
  • To emphasize the effectiveness of immunoprophylaxis in preventing mother-to-infant HBV transmission and subsequent chronic infections.
  • To evaluate the long-term impact of universal HBV immunization programs on infection rates and associated liver diseases.

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Main Methods:

  • Review of existing literature on HBV transmission, particularly mother-to-infant routes.
  • Analysis of the efficacy of screening pregnant women for Hepatitis B surface antigen (HBsAg) and Hepatitis B e-antigen (HBeAg).
  • Assessment of immunoprophylaxis protocols including HBV vaccine and Hepatitis B immunoglobulin (HBIG) administration.
  • Evaluation of universal infant HBV vaccination programs and their impact on disease incidence.

Main Results:

  • Maternal screening followed by infant immunoprophylaxis (HBV vaccine and HBIG) is highly effective in preventing HBV transmission.
  • Universal infant HBV vaccination, even without maternal screening in low-prevalence areas, demonstrates significant protective efficacy.
  • The implementation of a universal HBV immunization program in Taiwan over 22 years has led to substantial reductions in HBV infection rates, chronicity, HCC incidence, and fulminant hepatitis in children.

Conclusions:

  • Prevention of Hepatitis B virus (HBV) infection, especially through maternal screening and infant immunoprophylaxis, is paramount for global control.
  • Universal infant HBV vaccination is a cornerstone of HBV prevention, offering substantial public health benefits.
  • Long-term universal immunization programs are proven effective in drastically reducing the burden of HBV infection and its severe sequelae.