Volume 29, Number 5—May 2023
Research
SARS-CoV-2 Seroprevalence Compared with Confirmed COVID-19 Cases among Children, Colorado, USA, May–July 2021
Table 3
Group | Previous positive result | Case ascertainment, % (95% CI)† | Case ascertainment prevalence ratio (95% CI) | Multiplication factor‡ |
---|---|---|---|---|
Total |
50 |
16.4 (12.5–21.1) |
NA |
6 |
Race/ethnicity | ||||
Non-Hispanic White | 19 | 26.4 (16.7–38.1) | Referent | 4 |
Hispanic all races | 19 | 13.3 (8.2–20.0) | 0.50 (0.28–0.89§ | 8 |
Non-Hispanic Black | 3 | 7.5 (1.6–20.4) | 0.28 (0.09–0.90)§ | 13 |
Non-Hispanic other | 6 | 17.1 (6.6–33.7) | 0.65 (0.28–1.48) | 6 |
Unknown |
3 |
21.4 (4.7–50.8) |
0.81 (0.28–2.38) |
5 |
Age, y | ||||
1–4 | 13 | 13.1 (7.2–21.4) | Referent | 8 |
5–11 | 21 | 21.9 (14.1–31.5) | 1.67 (0.89–3.13) | 5 |
12–17 | 16 | 14.7 (8.6–22.7) | 1.12 (0.57–2.21) | 7 |
*NA, not applicable. †Case ascertainment calculated as the number of previous positive tests among seropositive children divided by the total number of seropositive children. ‡Multiplication factor calculated as the number of seropositive cases divided by the number of previous positive tests, also known as the inverse of case ascertainment. §Statistically significant at p<0.05.
1Preliminary results from this study were presented at the Council of State and Territorial Epidemiologists Conference; Louisville, Kentucky, USA; June 19–23, 2022.
Page created: March 27, 2023
Page updated: April 18, 2023
Page reviewed: April 18, 2023
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