Fig. 2
From: Stringent thresholds in SARS-CoV-2 IgG assays lead to under-detection of mild infections
Proportion of staff with anosmia or loss of taste by antibody reading. Panel a shows the results using a trimeric spike ELISA and panel b the results from the Abbott CMIA targeting nucleocapsid protein, with blue showing results called negative and red showing those called as positive based on pre-defined assay thresholds. The number of individuals with these symptoms is shown in each bar, and the total number of individuals with each antibody reading below the bar. The error bars show 95% confidence intervals. For the Oxford ELISA readings each value is rounded down, such that for example a value of 1.7 million is within the 1 million bar