Figure 1.

Antibody responses based on previous SARS-CoV-2 infection

Antibody responses to the receptor-binding domain (RBD) of the spike protein, the spike protein, and the nucleocapsid protein, based on previous SARS-CoV-2 infection. Medians are indicated by diamonds, the IQR values are indicated by horizontal segments, and saturation thresholds are indicated by dashed lines. t1=before first dose. t2=approximately 4 weeks after first dose. t3=6–10 weeks after first dose. t4=up to 2 days before administration of second dose (16 weeks after prime dose). t5=4 weeks after second dose.