Fig. 2.

CoV2-RBD-specific antibody levels in early CoV2 infection. 118 SARS-CoV-2 positive samples were screened for SARS-COV-2-RBD specific IgG (A), IgA (B) and IgM (C). Each graph shows the OD obtained for each sample (450 nm–570 nm). Selected high samples are shown in red, mediums in yellow and lows in green. The same set of SARS-CoV-2 positive samples was run against 22 negative samples. Data is shown for IgG (D), IgA (E), IgM (F). Groups were compared using a Mann-Whitney U test (**p < 0.01, ***p < 0.001). . (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)