Long-term kinetics of anti-RBD IgG antibodies 16 months after COVID-19 vaccination in Morocco: a longitudinal cohort study.

Sci Rep · 2026 · PMC13275918 · PMID 42032159

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did not reach statistical significanceno p-value reported

In the 3× BNT162b2 group, higher median titers were also observed among participants with prior infection; however, these differences did not reach statistical significance (Fig. 3 D).

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