Table 1. Demographic Characteristics of Seattle Coronavirus Assessment Network Participants, June 10, 2020, to July 27, 2022.
| Characteristic | Participants, No. (%) | |||
|---|---|---|---|---|
| Wild-type variant period, 6/10/2020 to 1/31/2021 (n = 17 079) | Pre-Omicron variants, 2/1/2021 to 12/11/2021 (n = 4785) | Omicron variants, 12/12/2021 to 7/27/2022 (n = 1634) | Overall, 6/10/2020 to 7/27/20 22 (N = 23 498) | |
| Test results | ||||
| SARS-CoV-2 casesa | 579 (3.39) | 283 (5.91) | 475 (29.07) | 1337 (5.69) |
| Presumed Delta | 0 | 142 (2.97) | 8 (0.49) | 150 (0.64) |
| Presumed Omicron | 0 | 0 | 431 (26.38) | 431 (1.83) |
| Rhinovirus casesb | 1311 (7.68) | 1169 (24.43) | 149 (9.12) | 2629 (11.19) |
| Other pathogen positivec | 402 (2.35) | 248 (5.18) | 107 (6.55) | 757 (3.22) |
| Pan-negative | 11 416 (66.84) | 2985 (62.38) | 846 (51.77) | 15 247 (64.89) |
| Not tested for other pathogens | 3580 (20.96) | 109 (2.28) | 83 (5.08) | 3772 (16.05) |
| Age, y | ||||
| Median (IQR) | 35.08 (23.50-45.83) | 32.00 (16.25- 42.33) | 34.75 (23.25-45.08) | 34.33 (22.42-45.08) |
| 12-50 | 11 857 (69.42) | 3102 (64.83) | 1147 (70.20) | 16 106 (68.54) |
| <12 | 1961 (11.48) | 985 (20.59) | 187 (11.44) | 3133 (13.33) |
| ≥50 | 3261 (19.09) | 698 (14.59) | 300 (18.36) | 4259 (18.12) |
| Sex | ||||
| Female | 9978 (58.42) | 2879 (60.17) | 1021 (62.48) | 13 878 (59.06) |
| Male | 7101 (41.58) | 1906 (39.83) | 613 (37.52) | 9620 (40.94) |
| Race and ethnicity | ||||
| Asian, non-Hispanic | 2791 (16.34) | 832 (17.39) | 395 (24.17) | 4018 (17.10) |
| Black, non-Hispanic | 405 (2.37) | 196 (4.10) | 53 (3.24) | 654 (2.78) |
| Hispanic, any race | 1575 (9.22) | 457 (9.55) | 161 (9.85) | 2193 (9.33) |
| White, non-Hispanic | 10 918 (63.93) | 2824 (59.02) | 871 (53.30) | 14 613 (62.19) |
| Otherd | 1390 (8.14) | 476 (9.95) | 154 (9.42) | 2020 (8.60) |
| County region | ||||
| North | 12 191 (71.38) | 2992 (62.53) | 936 (57.28) | 16 119 (68.60) |
| South | 4888 (28.62) | 1793 (37.47) | 698 (42.72) | 7379 (31.40) |
| SERI | ||||
| Low | 6915 (40.49) | 1760 (36.78) | 494 (30.23) | 9169 (39.02) |
| Moderate | 5773 (33.80) | 1511 (31.58) | 533 (32.62) | 7817 (33.27) |
| High | 4391 (25.71) | 1514 (31.64) | 607 (37.15) | 6512 (27.71) |
| Vaccination status | ||||
| Not fully vaccinated | 17 079 (100) | 2719 (56.82) | 298 (18.24) | 20 096 (85.52) |
| Fully vaccinated >6 mo ago | 0 | 413 (8.63) | 335 (20.50) | 748 (3.18) |
| Fully vaccinated <6 mo ago | 0 | 1567 (32.75) | 204 (12.48) | 1771 (7.54) |
| Boosted | 0 | 86 (1.80) | 797 (48.78) | 883 (3.76) |
| Household size | ||||
| <5 people | 14 162 (82.92) | 3931 (82.15) | 1362 (83.35) | 19 455 (82.79) |
| ≥5 people | 2917 (17.08) | 854 (17.85) | 272 (16.65) | 4043 (17.21) |
| Prior test history | ||||
| Prior positive test >90 d ago | 80 (0.47) | 121 (2.53) | 91 (5.57) | 292 (1.24) |
| No prior testing | 6619 (38.76) | 3461 (72.33) | 1231 (75.34) | 11 311 (48.14) |
| Symptoms, median (IQR), No. | 3.0 (1.0-5.0) | 3.0 (2.0-6.0) | 4.0 (2.0-7.0) | 3.0 (2.0-5.0) |
Abbreviation: SERI, social and economic risk index.
a
Includes coinfections with other pathogens.
b
Includes coinfections with other pathogens, excluding SARS-CoV-2.
c
Not including coinfections with SARS-CoV-2 or rhinovirus.
d
Includes American Indian or Alaska Native, Native Hawaiian and other Pacific Islander, other, and 2 or more races.