Table 1.
Cross-sectional seropositivity rates at each time point (period prevalence).
| Variables | Baseline | Two Months | Six Months |
|---|---|---|---|
| Overall | 21/1819 (1.2%) | 41/1473 (2.8%) | 64/1323 (4.8%) |
| Age by decade, years, n (%) | |||
| 20–29 | 10/381 (2.6%) | 17/302 (5.6%) | 20/253 (7.9%) |
| 30–39 | 5/543 (0.9%) | 11/436 (2.5%) | 18/381 (4.7%) |
| 40–49 | 3/424 (0.7%) | 9/340 (2.6%) | 12/321 (3.7%) |
| 50–59 | 1/310 (0.3%) | 2/257 (0.8%) | 9/238 (3.8%) |
| ≥60 | 2/161 (1.2%) | 2/138 (1.4%) | 5/130 (3.8%) |
| Gender, n (%) | |||
| Female | 18/1432 (1.3%) | 35/1196 (2.9%) | 49/1070 (4.6%) |
| Male | 3/387 (0.8%) | 6/277 (2.2%) | 15/253 (5.9%) |
| Race & Ethnicity, n (%) | |||
| White | 7/1031 (0.7%) | 22/856 (2.6%) | 31/775 (4.0%) |
| Black | 9/219 (4.1%) | 5/168 (3.0%) | 13/147 (8.8%) |
| Hispanic | 2/165 (1.2%) | 4/122 (3.3%) | 8/104 (7.7%) |
| Other | 3/404 (0.7%) | 10/327 (3.1%) | 12/297 (4.0%) |
| Type of Patient Care, n (%) | |||
| Direct | 19/1427 (1.3%) | 36/1171 (3.1%) | 51/1051 (4.9%) |
| Non-direct | 2/392 (0.5%) | 5/302 (1.7%) | 13/272 (4.8%) |
| Location, n (%) | |||
| Inova Fairfax | 18/1317 (1.4%) | 33/1034 (3.2%) | 43/948 (4.5%) |
| Other | 3/502 (0.6%) | 8/439 (1.8%) | 21/375 (5.6%) |