FIG. 1.

Plasma VLs of HIV-1-, HCV-, and HBV-infected plasma donor subjects. A total of 26 HIV-1⁺ seroconversion plasma donor plasma panels (HBV and HCV negative), 10 HBV plasma donor seroconversion panels (HIV-1 negative), and 10 HCV plasma donor seroconversion panels (HIV-1 negative) were studied. Panels demonstrate the kinetics of VL ramp-up in cases of HIV-1 (A), HCV (B), and HBV (C) infection. T₀ was defined as the first day that the VL reached 100 copies/ml for HIV-1, 600 copies/ml for HCV, and 200 copies/ml for HBV. T₀ values were assigned to only 26 out of 30 panels studied because of time gaps in sampling for four subjects.