Thelansis

 Hepatitis delta, the most severe form of viral hepatitis in humans, is caused by infection with the hepatitis delta virus (HDV), which stands alone in the genus Deltaviridae. This unique virus relies on the presence of the hepatitis B virus (HBV) for replication, forming a symbiotic relationship. HDV infection produces two forms of an RNA-binding protein, known as the long and small delta antigens (Ag), with the host cell providing essential proteins for replication, notably RNA-directed RNA polymerase activity. Consequently, HDV can only cause disease in individuals who are already infected with HBV. Transmission of HDV primarily occurs through the parenteral route, typically via exposure to contaminated blood or blood products. The hepatitis delta virus expresses a single protein, the hepatitis delta antigen (HDAg), which forms a nucleocapsid-like structure with the viral genome. There are two forms of HDAg: small and large. These antigens and the single-stranded RNA genome are ...

 Hepatitis Delta is the most severe form of viral hepatitis in humans and is caused by infection with the hepatitis delta virus (HDV). HDV is the only virus in the genus Deltaviridae. It is not classified as a viral family because it is a unique virus dependent on HBV. The HBV-dependent replication of HDV produces two forms of an RNA-binding protein known as the long and small delta antigens (Ag). The host cell provides all other proteins needed for the replication, especially the RNA-directed RNA polymerase activity. Thus, it can only cause disease in individuals who carry HBV. HDV infection is majorly transmitted via the parenteral route through exposure to blood or blood products. The hepatitis delta virus expresses only one protein, the hepatitis delta antigen (HDAg), which comprises a nucleocapsid-like structure with the genome. There are two forms of HDAg: small and large. Together, these and the single-stranded RNA genome are surrounded by a lipid envelope embedded with HBV-...