Increased anti-SARS-CoV-2 antibody titers in plasma-derived intravenous immunoglobulin collected in Southern China.

The results demonstrated a strong positive correlation between ADCC activity and both SP-binding Ab titers (r = 0.983) and neutralizing Ab titers (r = 0.975) against the WT strain; however, these correlations did not reach statistical significance ( p > 0.05), likely due to the small sample size ( N = 3; Figure S2 ).

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