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Individual antibody responses by OD value over time after symptom onset. (A) Individual OD values for SARS-CoV-2 RBD-specific IgG, IgA, and IgM plotted over time after symptom onset for 6 individuals for whom >10 simultaneously tested longitudinal samples were available. (B) Basic characteristics of each individual displayed in panel A. SAP, symptom severity at presentation.
