Table 1 Overall SARS-CoV-2 seroprevalence (values for seronegativity are not included) by isotype and isotype-antigen combination in the study participants by vaccination status (n = 1.076)
Fully vaccinated | Partially vaccinated | Non-vaccinated | ||||
|---|---|---|---|---|---|---|
Positive | Undetermined | Positive | Undetermined | Positive | Undetermined | |
n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | |
Overall | 674 (99.3) | 3 (0.4) | 252 (94.4) | 5 (1.9) | 70 (53.8) | 13 (10.0) |
By isotype | ||||||
IgM | 160 (23.6) | 88 (13.0) | 46 (17.2) | 26 (9.7) | 17 (13.1) | 13 (10.0) |
IgA | 509 (75.0) | 56 (8.2) | 148 (55.4) | 29 (10.9) | 54 (41.5) | 11 (8.5) |
IgG | 673 (99.1) | 3 (0.4) | 240 (89.9) | 7 (2.6) | 59 (45.4) | 8 (6.2) |
By antigen | ||||||
N | 33 (4.9) | 66 (9.7) | 28 (10.5) | 20 (7.5) | 18 (13.8) | 18 (13.8) |
NFL | 21 (3.1) | 59 (8.7) | 16 (6.0) | 27 (10.1) | 15 (11.5) | 17 (13.1) |
NCt | 13 (1.9) | 26 (3.8) | 14 (5.2) | 6 (2.2) | 6 (4.6) | 3 (2.3) |
RBD | 670 (98.7) | 5 (0.7) | 231 (86.5) | 12 (4.5) | 60 (46.2) | 7 (5.4) |
S | 655 (96.5) | 19 (2.8) | 208 (77.9) | 40 (15.0) | 58 (44.6) | 11 (8.5) |
S2 | 449 (66.1) | 171 (25.2) | 111 (41.6) | 70 (26.2) | 47 (36.2) | 18 (13.8) |
By isotype-antigen combination | ||||||
IgM NFL | 0 (0.0) | 5 (0.7) | 1 (0.4) | 8 (3.0) | 0 (0.0) | 3 (2.3) |
IgM NCt | 2 (0.3) | 10 (1.5) | 5 (1.9) | 1 (0.4) | 0 (0.0) | 1 (0.8) |
IgM RBD | 60 (8.8) | 87 (12.8) | 19 (7.1) | 27 (10.1) | 11 (8.5) | 10 (7.7) |
IgM S | 87 (12.8) | 137 (20.2) | 15 (5.6) | 37 (13.9) | 5 (3.8) | 11 (8.5) |
IgM S2 | 1 (0.1) | 18 (2.7) | 0 (0.0) | 7 (2.6) | 1 (0.8) | 2 (1.5) |
IgA NFL | 14 (2.1) | 27 (4.0) | 9 (3.4) | 18 (6.7) | 2 (1.5) | 12 (9.2) |
IgA NCt | 9 (1.3) | 17 (2.5) | 8 (3.0) | 7 (2.6) | 5 (3.8) | 2 (1.5) |
IgA RBD | 382 (56.3) | 64 (9.4) | 82 (30.7) | 13 (4.9) | 30 (23.1) | 9 (6.9) |
IgA S | 490 (72.2) | 57 (8.4) | 129 (48.3) | 21 (7.9) | 40 (30.8) | 16 (12.3) |
IgA S2 | 175 (25.8) | 217 (32.0) | 52 (19.5) | 68 (25.5) | 19 (14.6) | 29 (22.3) |
IgG NFL | 4 (0.6) | 42 (6.2) | 2 (0.7) | 13 (4.9) | 11 (8.5) | 12 (9.2) |
IgG NCt | 0 (0.0) | 3 (0.4) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 2 (1.5) |
IgG RBD | 668 (98.4) | 6 (0.9) | 224 (83.9) | 13 (4.9) | 58 (44.6) | 4 (3.1) |
IgG S | 647 (95.3) | 26 (3.8) | 175 (65.5) | 64 (24.0) | 40 (30.8) | 21 (16.2) |
IgG S2 | 344 (50.7) | 264 (38.9) | 52 (19.5) | 103 (38.6) | 30 (23.1) | 27 (20.8) |