Table 1.
Characteristics of HCWs with first infection and reinfection of SARS-CoV-2
| Characteristics | Total (n = 262) |
First infection (n = 101) |
Reinfection (n = 161) |
P |
|---|---|---|---|---|
| Sex | ||||
| Female | 212 (80.9) | 77 (76.2) | 135 (83.9) | 0.127 |
| Male | 50 (19.1) | 24 (23.8) | 26 (16.1) | |
| Age, years | 30 (27,33) | 29 (27,32) | 30 (27,34) | 0.116 |
| Age, years | ||||
| <30 | 128 (48.9) | 52 (51.5) | 76 (47.2) | 0.500 |
| ≥30 | 134 (51.1) | 49(48.5) | 85 (52.8) | |
| Type of employment | ||||
| Physician | 48 (18.3) | 24 (23.8) | 24 (14.9) | 0.083 |
| Nursing staff | 110 (42.0) | 33 (32.7) | 77 (47.8) | |
| Other health-assisting occupations | 64 (24.4) | 27 (26.7) | 37 (23.0) | |
| Management and administrative staff | 40 (15.3) | 17 (16.8) | 23 (14.3) | |
| Classification of medical personnel | ||||
| Medical staff category 1 | 158(84.5) | 57(79.2) | 101(87.8) | 0.111 |
| Medical staff category 2 | 29(15.5) | 15(20.8) | 14(12.2) | |
| Type of vaccine | ||||
| Inactivated vaccine | 234 (91.1) | 81 (81.0) | 153 (97.5) | < 0.001 |
| Non-inactivated vaccine | 23 (8.9) | 19 (19.0) | 4 (2.5) | |
| Doses of vaccine | ||||
| ≤ 2 | 25(8.5) | 7(6.9) | 18(11.2) | < 0.001 |
| 3 | 207(79.0) | 70(69.3) | 137(85.1) | |
| 4 | 30(11.5) | 24(23.8) | 6(3.7) | |
| Interval between the latest dose and infection | 493.8 (175.2) | 427.8 (205.3) | 536.2 (137.7) | < 0.001 |