| tt virus infection in italy: prevalence and genotypes in healthy subjects, viral liver diseases and asymptomatic infections by parenterally transmitted viruses. | this study was aimed to evaluate tt virus prevalence in subjects with hepatitis b virus (hbv), hepatitis c virus (hcv) and human immunodeficiency virus (hiv) infections in patients affected by hepatitis of unknown origin (non-a-non-e hepatitis) and in healthy subjects who had not been exposed to hbv, hcv and hiv. a total of 317 subjects were tested; 40 were hbsag asymptomatic carriers, 57 subjects were anti-hcv positive (45 without chronic hepatitis and 12 with hcv-related chronic hepatitis), an ... | 2001 | 11555197 |