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A, Anti‐SARS‐CoV‐2 IgG, IgA, IgM and (B) total antibody kinetics at different weeks after the RT‐qPCR positive detection in 48 patients on a total of 208 samples. IgA, immunoglobulin A; IgG, immunoglobulin G; IgM, immunoglobulin M; SARS‐CoV‐2, severe acute respiratory syndrome coronavirus 2; RT‐qPCR, quantitative reverse transcription‐polymerase chain reaction
