Fig. 2. ICU patients with impaired NCP antigen clearance show lower antibody concentrations against S1 but not NCP
(A) S1 IgG concentrations of individuals after day 8 post first positive PCR, from ICU (red) and non-ICU patients (grey). The ICU patients were split into the participants with NCP antigenemia above and below the test threshold defined by the manufacturer (2.97 pg/ml). S1-specific antibody concentrations (n=20, 24 and 10, respectively). (B) NCP-specific antibody concentrations (n=19, 24 and 11, respectively). Means ± SD. ** p<0.01; ns=not significant by t test.