Table 1.
Participant characteristics. CP: cancer patients; HCW: health care workers; F: female; ICU: intensive care unit.
| CP n = 523 | HC n = 579 | |
|---|---|---|
| Age: mean (sd) | 61 (12) | 41 (10) |
| Sex: F (%) | 377 (72.1%) | 482 (83.2%) |
| Vaccination reported during follow-up | ||
| No | 147 (28.1%) | 68 (11.8%) |
| 1 injection | 34 (6.5%) | 50 (8.8%) |
| 2 | 290 (55.4%) | 444 (76.7%) |
| 3 | 52 (9.9%) | 17 (2.9%) |
| Confirmed SARS-CoV-2 infection (self-reported) | 36 (6.9%) | 55 (9.5%) |
| never vaccinated | 10 | 10 |
| before vaccination | 18 | 31 |
| after vaccination | 8 | 14 |
| Positive Serology * without or before vaccination | 83 (22%) | 76 (14.9%) |
| Previous test-confirmed infection | 21 | 28 |
| Negative Serology * before vaccination | 293 (78%) | 503 (86.9%) |
| Previous test-confirmed infection | 7 | 13 |
| Hospitalization due to COVID | 16 (3%) | 3 (%) |
| ICU | 2 | 0 |
| Death (considered as related to COVID) | 0 | 0 |
* Titer > 33.8 BAU/mL corresponds to positive serology and titer ≤ 33.8 BAU/mL corresponds to negative serology.