Table 1. Characteristics of the documented infections.
Counts (N) correspond to numbers of infections.
| Variable | Category | N | Percent |
|---|---|---|---|
| Total | – | 1280 | 100 |
| Variant | Delta | 180 | 14.1 |
| Omicron BA.1 | 878 | 68.6 | |
| Other | 222 | 17.3 | |
| Vaccination Status | Unvaccinated | 228 | 17.8 |
| First dose | 6 | 0.5 | |
| Second dose | 420 | 32.8 | |
| Boosted | 626 | 48.9 | |
| Antibody Titer | 13–250 | 473 | 37.0 |
| 250–800 | 504 | 39.4 | |
| Unknown | 303 | 23.7 | |
| Symptomatic | No | 257 | 20.1 |
| Yes | 664 | 51.9 | |
| Unknown | 359 | 28 | |
| Detection Speed | Delayed detection | 877 | 68.5 |
| Frequent testing | 403 | 31.5 | |
| Age Group | 0–30 | 556 | 43.4 |
| 31–50 | 568 | 44.4 | |
| 50+ | 155 | 12.1 | |
| Unknown | 1 | 0.1 | |
| Cumulative Infection Number | 1 | 1128 | 88.1 |
| 2 | 149 | 11.6 | |
| 3 | 2 | 0.2 | |
| 4 | 1 | 0.1 | |
| Days Since Previous Exposure | Naïve (no prior exposure) | 220 | 17.2 |
| <1 month | 273 | 21.3 | |
| 1–3 months | 403 | 31.5 | |
| >3 months | 384 | 30.0 |