Table 2.
Odds ratios (OR) and 95% confidence intervals (95%CI) for the association between joint effect of vaccination and previous infection and risk of new infection and hospitalization occurred after December 1st, 2021.
| Vaccination status | Infection | Hospitalization |
|---|---|---|
| OR (95% CI)* | OR (95% CI)* | |
| No vaccination | 1 (ref) | 1 (ref) |
| Cycle completed by > 120 days | 0.89 (0.86–0.93) | 0.18 (0.10–0.31) |
| Cycle completed by ≤ 120 days | 0.73 (0.70–0.77) | 0.20 (0.08–0.51) |
| Booster dose | 0.48 (0.46–0.50) | 0.04 (0.02–0.07) |
*Adjusted for age, sex (matching) and vulnerability index.