TABLE 3.
Demographic characteristics with N‐Protein IgG and S‐Protein levels (second jab)
| Repeated negative RT‐PCR in the last 12 months (n = 589) | Positive RT‐PCR (n = 222) | p value | |||
|---|---|---|---|---|---|
|
Negative N‐Protein IgG a (n = 554) |
Positive N‐Protein IgG b (n = 35) |
9 to 12 months ago c (n = 72) |
3 to 7 months ago d (n = 150) |
||
| Sex | |||||
| Female (%) | 387 (69.9) | 32 (91.4) | 52 (72.2) | 121 (80.7) | <0.01 |
| Male (%) | 167 (30.1) | 3 (8.6) | 20 (27.8) | 29 (19.3) | |
| Age, mean (SD), year | 86.2 (9.0) | 85.6 (7.2) | 87.4 (8.6) | 88.0 (8.5) | NS |
| SARS‐CoV−2 S‐protein IgG level | |||||
| 0–50 AU/ml | 17 (3.1) | 1 (2.9) | 0 (0) | 1 (0.7) | |
| 50–1050 AU/ml | 146 (26.3) | 2 (5.7) | 0 (0) | 5 (3.3) | |
| 1050–4160 AU/ml | 231 (41.7) | 5 (14.3) | 6 (8.3) | 12 (8.0) | |
| ≥4160 AU/ml | 160 (28.9) | 27 (77.1) | 66 (91.7) | 132 (88.0) | |
| SARS‐CoV−2 S‐protein level median (Q1‐Q3) [range], AU/ml | 2384 (827; 4902)[0–40,000] | 18239 (5876; 38418) [0; 40000][0–40,000] | 39525 (19601; 4000) [6–14142] | 28863 (12083; 40000)[1–40,000] | |
a
Corresponds to residents with negative N‐Protein IgG.
b
Corresponds to residents with positive N‐Protein IgG.
c
Corresponds to residents with positive RT‐PCR 9 to 12 months ago.
d
Corresponds to residents with positive RT‐PCR 3 to 7 months ago.