Table 2 S1-reactive IgA and IgG antibody results according to age group.

From: Neutralising SARS-CoV-2 RBD-specific antibodies persist for at least six months independently of symptoms in adults

Age group

IgG & IgA negative

IgG positive

IgG borderline

IgA borderline/positive

15–25

196 (86.73%)

4 (1.77%)

2 (0.88%)

24 (10.62%)

25–50

920 (89.23%)

7 (0.68%)

12 (1.16%)

92 (8.92%)

>50

369 (93.42)

5 (1.27%)

1 (0.25%)

20 (5.06%)

not specified

2

0

0

1

  1. Antibodies were measured in sera from the initial blood draw at day 0. S1 subunit of spike protein (S1).
Back to article page