Table 1. Seropositivity for SARS-CoV-2 among healthcare, first response, and public safety personnel, by demographic characteristics, Detroit metropolitan area, Michigan, USA, May–June 2020*.
| Characteristics | No. (%) | % Seropositive (95% CI) |
|
|---|---|---|---|
| Total |
16,397 (100.0) |
6.9 (6.5–7.3) |
|
| Age group, y† | |||
| 18–24 | 686 (4.2) | 7.9 (6.0–10.2) | |
| 25–34 | 4,885 (29.8) | 6.9 (6.2–7.6) | |
| 35–44 | 3,977 (24.3) | 7.0 (6.2–7.9) | |
| 45–59 | 5,222 (31.9) | 6.9 (6.2–7.6) | |
| 60–64 | 1,106 (6.8) | 7.5 (6.0–9.2) | |
|
>65 |
521 (3.2) |
3.5 (2.1–5.4) |
|
| Sex | |||
| M | 5,146 (31.4) | 6.7 (6.0–10.2) | |
| F |
11,251 (68.6) |
7.0 (6.5–7.5) |
|
| Race/ethnicity | |||
| Non-Hispanic White | 12,858 (78.4) | 6.0 (5.6–6.4) | |
| Non-Hispanic Black | 1,200 (7.3) | 16.3 (14.2–18.5) | |
| Non-Hispanic Asian | 1,097 (6.7) | 7.3 (5.8–9.0) | |
| Hispanic | 440 (2.7) | 6.8 (4.7–9.6) | |
| Other‡ | 404 (2.5) | 7.2 (4.9–10.2) | |
| Declined to answer |
398 (2.4) |
7.0 (4.7–10.0) |
|
| Distance of work agency/facility from Detroit centroid | |||
| <15 km | 7,194 (43.9) | 11.0 (10.3–11.7) | |
| 15–30 km | 4,677 (28.5) | 5.5 (4.9–6.2) | |
| 31–55 km |
4,526 (27.6) |
1.8 (1.4–2.2) |
|
| Exposure to persons testing positive for COVID-19§ | |||
| Co-worker | 6,799 (41.5) | 10.0 (9.3–10.8) | |
| Household member | 519 (3.2) | 34.3 (30.2–38.6) | |
| Patient | 10,389 (63.4) | 7.8 (7.3–8.3) | |
| Other person |
2,709 (16.5) |
11.5 (10.3–12.7) |
|
| Housing | |||
| Multi-unit | 1,762 (10.8) | 8.4 (7.2–9.8) | |
| Single family | 14,634 (89.3) | 6.7 (6.3–7.11) |
|
*COVID-19, coronavirus disease; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2. †Test for trend in seropositivity statistically significant at α = 0.05. ‡Other race/ethnicity includes non-Hispanic Native Hawaiian and other Pacific Islander, non-Hispanic American Indian and Alaska Native, and participants who indicated other race. §Categories are not mutually exclusive.