GB virus C infection and liver transplantation: increased risk of transfusion-transmitted infection.

To the Editor: GB virus C (GBV-C) and hepatitis G virus (HGV) are recently discovered RNA viruses that infect humans. Because GBV-C and HGV are most likely isolates of the same virus, the GBV-C nomenclature will be used throughout this letter. GBV-C seems to cause hepatitis unrelated to infection