nucleocapside antigenemia
Among the 49 RT-PCR-positive residents with N-Ag measurement, median N-Ag levels were higher in non-vaccinated residents than in those having received 2 vaccine doses (Table 2), and higher in residents with severe symptoms (Fig. S1A). RBD-IgG level was predictive of N-Ag in SARS-CoV-2-infected residents (Fig. S1B).