Figure 2.

Quantitation of antibodies following BNT162b2 vaccination

(A) IgG concentrations over 5 weeks following vaccination. (B) Neutralising antibodies over 4 weeks following vaccination; no participants had serum samples assessed for neutralising antibodies at week 5. Antibodies were tested at 1–2 weeks after the first vaccine dose, at week 3 with the administration of the second vaccine dose, and at weeks 4–5, which refer to 1–2 weeks after the second vaccine dose, respectively. The dotted black line indicates the cutoff level of positive antibodies and neutralising concentrations. Solid black lines indicate medians (IQR). Each coloured dot represents one serum sample. RBD=receptor-binding domain. s/co=sample-to-cutoff ratio.