A Study on the Risk Factors for Hepatitis C Virus Infection among Drug Users

To investigate the possible risk factors for hepatitis C virus infection, a case-control study category matching was conducted among 531 drug users. In unconditional Lolgistic regression, indepentent risk factors associated with anti-HCV included history of intraveno us drug use(IVDU)(odds ratioOR= 6.68, P<(0.001), multiple sexual partners(OR=3.71, P< 0.001), transfusion(OR= 2.64, P< 0.0001) and anti-HB cpositivity(OR= 1.71, P< 0.05), whereas condomuse in sexual activity was protective factor(OR= 0.37, P< 0.005). Results suggest that IVDU and transfu sionare the primary route of transmission and sexual transmission may also play an important role in transmission of HCV among drug users.