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.