Table 2.
Age-Specific, Sex-Specific, Race/Ethnicity-Specific SARS-CoV-2 Seroprevalence Estimates in Arkansas From April 2, 2020, to April 28, 2021
| Persons Reactive, % (95% CI) (No.) | |||||
|---|---|---|---|---|---|
| Characteristica | Wave 1 (n = 316) |
Wave 2 (n = 299) |
Wave 3 (n = 583) |
Wave 4 (n = 570) |
Wave 5 (n = 589) |
| Collection Dates | April 2 to May 6, 2020 | June 6 to August 10, 2020 | September 8 to October 17, 2020 | November 7 to December 17, 2020 | April 5 to April 28, 2021 |
| Age category | |||||
| 1-4 years | 10.7 (2.4-19.1) (6) | 15.2 (2.2-28.1) (5) | 20.8 (11.5-30.0) (16) | 7.9 (1.7-14.1) (6) | 16.0 (7.5-24.5) (12) |
| 5-9 years | 4.9 (0.0-10.5) (3) | 8.0 (1.7, 14.3) (6) | 18.8 (11.4-26.1) (21) | 13.2 (6.9-19.5) (15) | 19.0 (12.5,-25.5) (27) |
| 10-14 years | 8.9 (2.9-14.9) (8) | 11.2 (4.9-17.6) (11) | 14.5 (9.6-19.4) (29) | 14.7 (9.8-19.6) (30) | 28.7 (22.2-35.3) (54) |
| 15-18 years | 7.3 (1.4-12.3) (8) | 6.5 (1.4-11.5) (6) | 15.5 (10.3-20.6) (30) | 15.8 (10.3-21.3) (27) | 29.1 (22.5-35.8) (53) |
| Sex | |||||
| Female | 8.7 (4.3-13.1) (14) | 9.0 (4.5-13.6) (14) | 17.9 (13.7-22.2) (57) | 14.4 (10.5-18.2) (46) | 26.5(21.7-31.3) (88) |
| Male | 7.1 (3.0-11.2) (11) | 9.7 (4.8-14.6) (14) | 14.7 (10.4-19.0) (39) | 13.1 (8.8-17.3) (32) | 22.8 (17.6-27.9) (58) |
| Race | |||||
| White | 8.9 (4.7-13.1) (16) | 8.9 (4.4-13.3) (14) | 12.2 (8.7-15.7) (42) | 12.4 (8.7-16.1) (38) | 17.0 (12.9-21.1) (55) |
| Black | 5.6 (0.7-10.4) (5) | 3.8 (0.0-9.1) (2) | 18.0 (10.8-25.3) (20) | 16.3 (10.1-22.5) (23) | 28.4 (19.8-37.0) (31) |
| Other | 9.1 (0.2-17.9) (4) | 14.8 (6.9-22.7) (12) | 28.3 (19.6-37.0) (30) | 15.8 (8.3-23.3) (15) | 41.0 (32.1-49.8) (50) |
| Ethnicity | |||||
| Hispanic | 10.7 (0.0-22.9) (3) | 13.9 (5.2-22.5) (9) | 29.7 (20.1-39.2) (27) | 28.9 (16.1-41.6) (15) | 40.5 (30.1-50.8) (36) |
| Non-Hispanic | 8.1 (4.9-11.4) (22) | 8.8 (5.0-12.6) (19) | 14.7 (11.4-17.9) (66) | 12.5 (9.5-15.6) (57) | 20.7 (16.9-24.6) (90) |
| Total | 7.9 (4.9-10.9) (25) | 9.4 (6.0-12.7) (28) | 16.5 (13.4-19.5) (96) | 13.9 (11.0-16.7) (79) | 25.0 (21.5-28.5) (147) |
CI, confidence interval; SARS-CoV-2, severe acute respiratory syndrome coronavirus-2.
Standardized positivity rates were calculated based on the 2019 US Census Bureau Arkansas state population estimates (age ≤ 18).