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Correlation between anti-SARS-CoV-2 IgM levels and the other three antibodies. Each dot represents the antibodies in one individual at each time point (n = 608). ***, significant at the 0.001 probability level. Abbreviations: NAb: anti-SARS-CoV-2 neutralizing antibodies; Total: anti-SARS-CoV-2 total antibodies; IgG: anti-SARS-CoV-2 IgG antibodies; IgM: anti-SARS-CoV-2 IgM antibodies.
