CD4 and lymphopenia: Ct variation directly correlated with CD3+ lymphocyte absolute counts collected at T0 (delta Ct E gene Spearman r = 0.138, p = 0.029; delta Ct N gene Spearman r = 0.124, p = 0.051; delta Ct RdRP gene Spearman r = 0.134, p = 0.034), and CD4+ (delta Ct E gene Spearman r = 0.140, p = 0.027; delta Ct N gene Spearman r = 0.147, p = 0.020; delta Ct RdRP gene Spearman r = 0.139, p = 0.028), with lower CT variation over time observed in patients who presented with more severe lymphopenia at T0 (Table 3).