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Antibody levels by severity of maternal SARS-CoV-2 infection with respect to latency from SARS-CoV-2 infection to delivery. A, Maternal IgG. B, Infant IgG. Severity: green = severe, pink = moderate, blue = mild. Locally weighted smoothing (LOESS) was applied for univariate regression analysis fitting of antibody plots with respect to latency time. Abbreviations: AU, arbitrary units; IgG, immunoglobulin G; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.
