Table 1.
Demographic and clinical characteristics of individuals who were multi-reinfected with COVID-19.
| Characteristic | No. (%) | |
|---|---|---|
| x1 Reinfected Individuals | x2 Reinfected Individuals | |
| Total | 4258 | 196 |
| Sex | ||
| Female | 1546 (36.3) | 61 (31.1) |
| Male | 2712 (63.7) | 135 (68.9) |
| Age, years | ||
| Median | 32 (IQR [24-40]) | 29 (IQR [25-39]) |
| Mean | 34 (SD 13) | 33 (SD 12) |
| 13-25 | 1098 (25.8) | 53 (27.0) |
| 26-35 | 1696 (39.8) | 85 (43.4) |
| 36-45 | 813 (19.1) | 29 (14.8) |
| 46-55 | 357 (8.4) | 13 (6.6) |
| 56-65 | 175 (4.1) | 14 (7.2) |
| ≥66 | 119 (2.8) | 2 (1) |
| Time Lapse Between Infectionsa | ||
| From 90 to 100 days | 187 (4.4) | 41 (10.5) |
| From 100 to 200 days | 1252 (29.4) | 245 (62.5) |
| From 200 to 600 days | 2819 (66.2) | 106 (27) |
| Variants | ||
| Total | 957 (22.5)b | 3 (1.5)c |
| Delta | 844 (88.2) | 3 (100) |
| Beta | 49 (5.1) | 0 |
| Alpha | 29 (3) | 0 |
| Wild-type | 35 (3.7) | 0 |
| Vaccination Status | ||
| Unvaccinatedd | 2823 (66.3) | 175 (89.3) |
| Vaccinated | 1435 (33.7) | 21 (10.7) |
| Occupation | ||
| Health care Workers | 125 (2.9) | 6 (3.1) |
| Non-Health care Workers | 1976 (46.4) | 97 (49.5) |
| Unknown | 2157 (50.7) | 93 (47.4) |
a
Time intervals between two infections were counted in days. For x1 reinfections, each individual corresponds to a one-time interval. For x2 reinfections, each individual corresponds to two-time intervals.
b
For x1 reinfections, both infection episodes were sequenced.
c
For x2 reinfections, only the second infection episode was sequenced.