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Kaplan–Meier plots for cumulative incidence of CMV infection within 6 months post-transplant in kidney transplant recipients with IFN-γ ELISpot ≥250 or <250 SFUs/2.5 × 105 PBMCs. Abbreviations: CMV, cytomegalovirus; IFN-γ ELISpot, enzyme-linked immunosorbent spot assay for interferon-gamma; SFUs, spot-forming units; PBMCs, peripheral blood mononuclear cells; HR, hazard ratio; CI, confidence interval.
