Immunogenicity
SARS-COV-2 INFECTION
In participants without evidence of prior SARS-CoV-2 infection 28 days after the mRNA-1273.222 and mRNA-1273 booster dose, respectively, the observed neutralizing antibodies (nAb), reported as geometric mean titers (GMTs (95% CI)), were 2,324.6 (1,921.2−2,812.7) and 488.5 (427.4−558.4) against Omicron BA.4/BA.5, and 7,322.4 (6,386.2−8,395.7) and 5,651.4 (5,055.7−6,317.3) against ancestral SARS-CoV-2 (D614G) (Fig. 