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[Studies on HDV and HCV infection in plasma donors with positive HBsAg].

Studies on HDV and HCV infection were carried out in 127 plasma donors and 152 non-donors carrying HBsAg. Results showed 7.9% (10/127) of the plasma donors and 1.3% (2/152) of the non-donors carrying HBsAg infected with HDAg, 41.7% (53/127) and 2.6% (4/152) with anti-HCV positive, and with prevalence rates of hepatitis of 18.1% (23/127) and 4.6% (7/152), respectively. The studies also indicated higher rates of HDV and HCV infection and prevalence of hepatitis may be caused by cross-infection during the course of plasmapheresis.