Figure 3. Levels of Neutralizing Antibody (nAb) Responses After the Second Dose of the mRNA-1273 or BNT162b2 Vaccine.

Neutralizing antibody responses are measured by half maximal inhibitory concentration (IC₅₀) dilutions. The dotted lines indicate the threshold positivity of the assay (ie, IC₅₀ >50 dilutions); IC₅₀ dilutions were log₁₀ transformed for analysis. Resulting P values were adjusted for multiple testing using the Benjamini-Hochberg false discovery rate. Values are median (SE, denoted by whiskers). Additional information on P values is provided in the eLegend for eFigure 3 in the Supplement. Anti-S indicates IgG anti-spike; 2019-nCoV, the original, nonvariant SARS-CoV-2.

^aP < .01.

^bP < .001.

^cP < .05.