Figure 3.

Neutralization activity of sera. Sera from AZ- or J&J-immunized individuals were analysed using lentiviral vectors pseudotyped with the WT, Delta, or Omicron spike. Neutralization is depicted as the reciprocal area under the curve. J&J vaccination was a single dose, and the values are depicted in yellow. For Omicron, no significance was assessed, as mean levels were below background values. Bars indicate the arithmetic mean for each group. Significance is indicated with two stars (**) for a p-value between 0.001 and 0.01, and one star (*) denotes a p-value between 0.01 and 0.05.