A virus first identified in 1995 that is genetically related to the hepatitis C virus, but uniquely is not known to cause hepatitis or any other disease. Infection with the hepatitis G virus seems to be beneficial to HIV-infected patients. These patients have longer survival when they are coinfected with hepatits G and HIV than if they have HIV alone. The hepatitis G virus is also called the GB virus C (GBV-C). This designation is often preferred since the virus is not a cause of hepatitis.