About 0,5% of the population in Germany has a chronic hepatitis B virus (HBV) infection. Untreated, chronic HBV infection can progress to liver cirrhosis and hepatocellular carcinoma (HCC). If diagnosed early, antiviral therapy can effectively prevent liver disease progression, but a cure is currently hardly achievable. About 5% of those chronically infected with HBV are also co-infected with the hepatitis D virus (HDV). HBV/HDV co-infection leads to liver cirrhosis in approximately 50% of patients within 5-10 years. Since 2020, the cell entry inhibitor bulevirtide is available as a specific therapy for HBV/HDV co-infection.
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