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Ex vivo Culture of Human Placental Explants for the Study of Viral Transmission Across the Maternal-Fetal Interface
Published on: December 30, 2025
Maternal-fetal transmission of hepatitis C infection: what is so special about babies?
Jessica W Wen1, Barbara A Haber
1*Division of Gastroenterology, Hepatology and Nutrition, The Children's Hospital of Philadelphia †Merck Sharp & Dohme, Philadelphia, PA.
Insights
Hepatitis C virus (HCV) infection in children differs from adults, with vertical transmission being common. Viral diversity and infant immunity impact HCV
Area of Science:
- Pediatric infectious diseases
- Hepatology
- Immunology
Background:
- Hepatitis C virus (HCV) infection in children presents unique characteristics compared to adults, including viral clearance rates and disease progression.
- Vertical transmission from mother to infant is the predominant route of HCV acquisition in the pediatric population.
- Understanding the natural history of pediatric HCV is crucial for effective management and treatment strategies.
Purpose of the Study:
- To review the factors influencing the natural history of hepatitis C virus infection in children.
- To explore the impact of viral diversity and the infant immune system on maternal-fetal HCV transmission.
- To highlight the implications for drug and vaccine development in pediatric and adult populations.
Main Methods:
- Literature review focusing on pediatric hepatitis C virus infection.
- Analysis of factors affecting viral transmission and disease progression in infants.
- Examination of the interplay between viral characteristics and host immunity.
Main Results:
- Hepatitis C virus infection in children shows distinct patterns of viral clearance and progression to cirrhosis compared to adults.
- Maternal-fetal transmission is the primary mode of HCV acquisition in infants.
- Viral diversity and the developing infant immune system play significant roles in the outcome of vertical HCV transmission.
Conclusions:
- The natural history of hepatitis C virus infection in children is influenced by specific host and viral factors.
- Further research into maternal-fetal transmission dynamics is essential for improving pediatric HCV management.
- Enhanced understanding can accelerate the development of targeted therapies and preventative strategies for hepatitis C virus.
Abstract:
Children with hepatitis C virus infection often differ from adults regarding the rate of viral clearance, duration of infection, and the progression to cirrhosis. In the pediatric population, vertical transmission of hepatitis C virus infection from mother to infant is the most common route of infection. In the present review, we explore the factors that may influence the natural history of hepatitis C virus infection in children who acquire the infection through maternal-fetal transmission. There is particular focus on how viral diversity and the infant immune system may affect viral transmission. An enhanced understanding of maternal-fetal transmission of hepatitis C virus infection has the potential to affect effective drug and vaccine development for both children and adults.
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