| prevalence and risk factor analysis of ttv infection in prostitutes. | ttv, a dna virus, has been isolated from patients with non-a to non-e post-transfusion hepatitis. in the past it was assumed that ttv was transmitted parenterally. it is unclear whether sexual contact leads to transmission of this virus. in this study, two sets of ttv-specific polymerase chain reaction primers were used to detect serum ttv dna in 140 prostitutes and 136 controls. the prevalence of ttv dna in prostitutes was significantly higher than in the control group (46/140 [32.9%] vs. 29/13 ... | 2000 | 10686021 |