Participants’ characteristics
| Characteristics | Total (n=6500) | Athletes (n=4269) | Staff (n=2231)* |
| Age, n (%) | |||
| 14–18 | 886 (13.6) | 886 (20.8) | – |
| 19–25 | 2885 (44.4) | 2769 (64.9) | 116 (5.2) |
| 26–30 | 648 (10.0) | 384 (9.0) | 264 (11.8) |
| 31–35 | 516 (7.9) | 190 (4.5) | 326 (14.6) |
| 36–45 | 746 (11.5) | 40 (0.9) | 706 (31.6) |
| >45 | 818 (12.6) | – | 818 (36.7) |
| Sex, n (%) | |||
| Male | 5650 (86.9) | 3713 (87.0) | 1937 (86.8) |
| Female | 850 (13.1) | 556 (13.0) | 294 (13.2) |
| Disease severity†, n (%) | |||
| Mild | 576 (99.0) | 439 (99.8) | 137 (96.6) |
| Moderate | 5 (0.9) | 1 (0.2) | 4 (2.7) |
| Severe/critical | 1 (0.1) | 0 (0.0) | 1 (0.7) |
*One missing data for age.
†According to WHO-COVID-19 Clinical management: living guidance, 25 January 2021. Out of 122 teams’ medical staff, six could not be contacted and twelve did not know or refused to inform about disease severity.