CD8A and hepatitis B virus infection: Figure 6 B shows the cumulative results obtained in 6 subjects with detectable HCMV (P9, P10, P7, P24), EBV- (P13) and influenza-specific CD8 (P24, P11) at the onset and recovery of acute hepatitis B. Bars indicate the % increase of IFN-gamma producing CD8 T cells at onset of acute hepatitis in comparison with recovery.