Table 2.
Characteristics of COVID-19 infected and non-infected participants in the four subgroups of vaccinated Health-Care Workers with or without hybrid immunity (by a previous COVID-19 infection).
| Fully vaccinated without hybrid immunity | Fully vaccinated with hybrid immunity | Booster vaccinated without hybrid immunity | Booster vaccinated with hybrid immunity | |||||
|---|---|---|---|---|---|---|---|---|
| Number (N) | 154 | 16 | 1,016 | 119 | ||||
| Median age (IQR) | 47 (36, 57) | 49 (33.5, 51) | 47 (37, 56) | 40 (32, 52) | ||||
| Infected | Non-infected | Infected | Non-infected | Infected | Non-infected | Infected | Non-infected | |
| Age (%) | ||||||||
| Age < median | 40 (52.6) | 36 (47.4) | 1 (14.3) | 6 (85.7) | 248 (51.7) | 232 (48.3) | 6 (10.2) | 53 (89.8) |
| Age ≥ median | 31 (39.7) | 47 (60.3) | 0 (0.0) | 9 (100.0) | 200 (37.3) | 336 (62.7) | 6 (10.0) | 54 (90.0) |
| p-value | 0.109 | 0.437 | <0.001 | 0.976 | ||||
| Gender (%) | ||||||||
| Male | 17 (30.9) | 38 (69.1) | 0 (0.0) | 4 (100.0) | 138 (40.0) | 207 (60.0) | 2 (6.4) | 29 (93.6) |
| Female | 54 (54.6) | 45 (45.4) | 1 (8.3) | 11 (91.7) | 310 (46.2) | 361 (53.8) | 10(11.4) | 78 (88.6) |
| p-value | 0.005 | 0.999 | 0.059 | 0.435 | ||||