Table 2b.
Prevalence of SARS-CoV-2 seropositivity by COVID-19 related characteristics, both hospitals, April 2021.
| COVID-19 related characteristics | Total | SARS-CoV-2 seropositive participants | |||
|---|---|---|---|---|---|
| N | n | % (95% CI) | p-value* | ||
| Daily contact with COVID-19 patients | Contact with COVID-19 patients | 1,136 | 265 | 23 (21–26) | <0.001 |
| Contact with patients without COVID-19 | 2,500 | 463 | 19 (17–20) | ||
| No patient contact | 1,449 | 170 | 12 (10–14) | ||
| Previous COVID-19 symptoms (ever) | No symptoms | 2,913 | 169 | 5.8 (5.0–6.7) | <0.001 |
| Had symptoms | 2,171 | 729 | 34 (32–36) | ||
| Missing | 1 | 0 | - | ||
| Severity of symptoms | No symptoms | 2,913 | 169 | 5.8 (5.0–6.7) | <0.001 |
| Mild symptoms | 1,502 | 335 | 22 (20–24) | ||
| Significant symptoms | 621 | 364 | 59 (55–63) | ||
| Severe (hospitalized) | 47 | 30 | 64 (49–77) | ||
| Missing | 1 | 0 | - | ||
| Previous positive COVID-19 PCR | No | 4,273 | 235 | 5.5 (4.8–6.2) | <0.001 |
| Yes | 812 | 663 | 82 (79–84) | ||
| Symptoms at time of previous positive PCR | No | 172 | 87 | 51 (43–58) | <0.001 |
| Yes | 640 | 576 | 90.0 (87–92.2) | ||
| Severity of symptoms at time of PCR | No symptoms | 172 | 87 | 51 (43–58) | <0.001 |
| Mild symptoms | 256 | 226 | 88 (84–92.0) | ||
| Significant symptoms | 351 | 320 | 91.2 (88–93.9) | ||
| Severe (hospitalized) | 32 | 30 | 93.8 (79–99.2) | ||
| Missing | 1 | 0 | - | ||
*
Calculated using the chi-square test. Statistically significant findings in bold.