Does hepatitis d have the Australia antigen?

Yes, Hepatitis D virus (HDV) is dependent on the presence of Hepatitis B virus (HBV) for its replication. The Australia antigen, also known as Hepatitis B surface antigen (HBsAg), is present in individuals infected with HBV. Since HDV requires HBV to be present, individuals with Hepatitis D will also typically test positive for the Australia antigen.