Hepatitis B virus and hepatitis C virus co-infection: additive players in chronic liver disease?

Area of Science:

• Hepatology
• Virology
• Infectious Diseases

Background:

• Hepatitis B virus (HBV) and hepatitis C virus (HCV) share transmission routes, leading to frequent coinfections, especially in endemic areas.
• Occult HBV infection, characterized by HBV genomes in HBsAg-negative individuals with HCV, is more prevalent than often recognized.
• Dual HBV/HCV infections, including occult HBV, are associated with accelerated liver fibrosis, cirrhosis, and hepatocellular carcinoma.

Purpose of the Study:

• To review the available data on the virological and clinical features of dual HBV/HCV infection.
• To highlight key areas for future research on HBV/HCV coinfection.
• To improve understanding of the interplay between HBV and HCV in coinfected patients.

Main Methods:

• Literature review of existing studies on HBV/HCV coinfection.
• Analysis of virological and clinical data from coinfected patients.
• Identification of knowledge gaps in the field of hepatology concerning dual viral infections.

Main Results:

• Coinfection with HBV and HCV, including occult HBV, is a significant clinical concern.
• The interplay between HBV and HCV in coinfection requires further investigation.
• Dual infections can promote liver disease progression.

Conclusions:

• Dual HBV/HCV infection, encompassing overt and occult HBV, has substantial clinical implications.
• More research is essential to elucidate the complex interactions between HBV and HCV.
• Understanding these viral dynamics is crucial for advancing hepatology and patient care.