FIGURE 1.

SARS-CoV-2 IgG kinetics. A, Kinetics SARS-CoV-2 IgG anti-N antibody in relation to positive nasopharyngeal PCR. B, Kinetics SARS-CoV-2 IgG anti-S antibody in relation to positive nasopharyngeal PCR. Anti-N and anti-S IgG for patients 6 and 10 (not shown in figure) were seronegative at d of transplantation and remained seronegative after transplantation (at 136 d of follow-up). Patient 7 died during follow-up, and, consequently, only a single measurement was performed. Anti-S IgG was not available for patient 11. A S/CO value of ≥1.40 for anti-N IgG and a value of ≥50 arbitrary units per milliliter (AU/mL) for anti-S IgG were considered positive. Anti-N, antinucleocapsid; anti-S, antispike; IgG, immunoglobulin G; PCR, polymerase chain reaction; SARS-CoV-2, severe acute respiratory syndrome coronavirus-2; S/CO, single cutoff; Tx, transplantation.