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Updated: Dec 12, 2025
Modeling Hepatitis B Virus Infection in Non-Hepatic 293T-NE-3NRs Cells
Published on: June 5, 2020
Natural history of hepatitis B virus infection: pediatric perspective
1Department of Pediatrics, College of Medicine and Children's Hospital, National Taiwan University, 8 Chung-Shan South Road, Taipei, Taiwan. yhni@ntu.edu.tw
Insights
Hepatitis B virus (HBV) infection remains a global health concern. While vaccination controls spread, breakthroughs highlight the need for new treatments for chronic HBV carriers.
Area of Science:
- Hepatology
- Virology
- Immunology
Background:
- Hepatitis B virus (HBV) infection poses a significant global health challenge, with chronic infections leading to severe complications.
- Transmission occurs perinatally or horizontally, often establishing chronic carrier status in early childhood.
- Host-virus interactions, including viral immune evasion via mutations and host genetic factors, dictate disease progression.
Purpose of the Study:
- To review the global impact of Hepatitis B virus (HBV) infection.
- To discuss the mechanisms of viral persistence and host immune response.
- To highlight challenges in HBV control, including vaccination failure and the need for novel therapeutic strategies.
Main Methods:
- Literature review of HBV transmission, pathogenesis, and control strategies.
- Analysis of host-virus interactions and immune evasion mechanisms.
- Examination of factors contributing to vaccination failure and implications for disease management.
Main Results:
- Universal infant HBV vaccination has reduced infection rates but has not eliminated the disease.
- Vaccination failure can occur due to high maternal viremia, in utero transmission, escape mutants, or in immunocompromised individuals.
- Occult HBV infections in donors pose a risk to immunocompromised recipients.
Conclusions:
- Global HBV elimination requires robust vaccination programs and effective treatments for existing chronic infections.
- Understanding viral escape mechanisms and host factors is crucial for managing HBV.
- Novel therapeutic approaches are essential to control HBV in vaccination failure cases and achieve eradication.
Abstract:
Hepatitis B virus (HBV) infection is an important disease globally. Chronic HBV infection may result in serious complications. Its transmission may be either perinatal or horizontal. Perinatal transmission is particularly important after the implementation of a universal vaccination program. Through either route, chronic carrier status is usually established in early childhood. The course of the disease course is determined by the host-virus interaction. The host's immune system initially tolerates the virus, and then gradually attempts to clear it. The virus, on the other hand, tries to avoid host immune system attack by a strategy involving targeted epitope mutations. By generating mutants, the virus can survive attacks from the host's immune system, enabling the infection to persist. Different individuals have different responses to HBV infection; genetic polymorphisms in cytokines, hormones, and other immune modulators may affect the final outcome of chronic HBV infection. Due to the implementation of a universal infant HBV vaccination program, HBV infection is now under control. Unfortunately, there still are some cases of vaccination failure. Very high maternal viremia, in utero infection, or escape mutants are possible reasons for vaccination failure. Immunocompromised hosts also risk vaccination failure. Blood or organ donors with occult HBV infection are possible sources for immunocompromised hosts. These victims of vaccination failure may exhibit a different disease course due to chronic HBV infection from those who acquired the infection before the universal vaccination era. The achievement of our ultimate goal of HBV elimination depends on a globally effective universal vaccination program, as well as the application of some novel successful medications to control those who are already infected.
