Table 2 Humoral immune response to BNT162b2 vaccination according to serum IgG anti-spike protein antibody levels
Nursing home residents (n = 26) | Control group (n = 184) | p value | |
|---|---|---|---|
Seronegative 3 weeks after the 1st dose (< 0.8 U/mL) (number, %) | 20, 77% | 1, 0.5% | < 0.001 |
Seronegative 2 weeks after the 2nd dose (< 0.8 U/mL) (number, %) | 4, 15% | 0, 0% | < 0.001 |
Seronegative 3 weeks after the 2nd dose (< 0.8 U/mL) (number, %) | 2, 8% | 0, 0% | 0.004 |