Similarly, by SFB, levels of antibodies binding to the surface-expressed XBB Spike showed a trend toward being higher among those who received mRNA-1273 (median 37.6% binding) relative to BNT162b2 (median 31.3% binding), though this did not reach statistical significance ( Fig. 1 C).
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Heterologous mRNA vaccine boosters induce a stronger and longer-lasting antibody response against Omicron XBB variant.
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