New clues to hepatitis B species restriction could help build a novel model for studying infection

MedicalXpress | Apr 22, 2026

Some 254 million people live with a chronic hepatitis B (HBV) infection that is often asymptomatic for decades, only to emerge in an advanced stage of disease that turns to fatal cirrhosis or liver cancer in nearly a million people every year. The development of effective treatments for HBV infections has been stymied because we lack a good small animal model for studying the entire viral lifecycle, host response, and disease progression.