COVID-19 seropositivity according to work category
| Work category | HCWs in the sample | Seropositive HCWs | % (95% CI) |
| Nursing staff | 548 | 66 | 12.0 (9.4 to 15.1) |
| Administration | 474 | 45 | 9.5 (7.0 to 12.5) |
| Physicians | 337 | 34 | 10.1 (7.1 to 13.8) |
| Medical technology staff | 150 | 8 | 5.3 (2.3 to 10.2) |
| Logistics | 195 | 17 | 8.7 (5.2 to 13.6) |
| Nursing assistant staff | 98 | 7 | 7.1 (2.9 to 14.2) |
| Students/apprentices/trainees | 55 | 11 | 20.0 (10.4 to 33.0) |
| Social workers | 14 | 0 | 0.0 (0.0 to 23.2) |
| Faculty | 3 | 0 | 0.0 (0.0 to 70.8) |
| Overall | 1874 | 188 | 10 (8.7 to 11.5) |
Fisher’s exact p value for differences in prevalence between work categories: 0.074 (estimated based on Monte Carlo approximation).
HCWs, healthcare workers.