Skip to main content
Fig. 1 | BMC Infectious Diseases

Fig. 1

From: Stringent thresholds in SARS-CoV-2 IgG assays lead to under-detection of mild infections

Fig. 1

SARS-CoV-2 IgG antibody readings in 245 convalescent symptomatic healthcare workers ≥ 14 days following a positive PCR test. Panel a shows readings using the Oxford ELISA assay targeting trimeric spike protein (n = 171) and panel b shows readings using the Abbott CMIA targeting nucleocapsid protein (n = 240). The dashed horizontal lines show the pre-defined threshold for reporting antibody detection (Oxford ELISA 8 million, Abbott CMIA 1.4). The solid line and ribbon shows the fitted mean value and 95% confidence interval using a linear regression model with a 3 knot spline. Points are coloured by whether staff reported previous anosmia (loss of smell) and/or ageusia (loss of taste) since 01 February 2020 when asked prior to serological testing: 159/245 staff (65%) reported anosmia/ageusia

Back to article page
\