Table 2b.
Quantitative assessment of SARS‐CoV‐2 antispike IgG positivity in HCWs on Day 21 after 2nd dose of vaccination with CoronoVac
| Characteristics of HCWs (n = 1008) | Antispike IgG | |||||
|---|---|---|---|---|---|---|
| Positive | Median | Minimum | Maximum | |||
| Age by group | Gender | COVID‐19 History (n) | No. (%) | AU/ml | AU/ml | AU/ml |
| 18–34 years (n = 599) | Male | PCR‐confirmed | 46 (100) | 1012.20 | 459.80 | 13192.60 |
| Unknown | 12 (100) | 757.85 | 259.60 | 3441.50 | ||
| Not infected | 172 (100) | 952.80 | 130.50 | 6267.30 | ||
| Male total | 230 (100) | 964.60 | 130.50 | 13192.60 | ||
| Female | PCR‐confirmed | 97 (100) | 1193.30 | 219.60 | 40780.00 | |
| Unknown | 12 (100) | 1681.75 | 1009.30 | 2469.90 | ||
| Not infected | 260 (100) | 1181.70 | 54.40 | 16086.00 | ||
| Female total | 369 (100) | 1193.30 | 54.40 | 40780.00 | ||
| Total | 599 (100) | 1119.60 | 54.40 | 40780.00 | ||
| 35–59 years(n = 390) | Male | PCR‐confirmed | 69 (100) | 1212.90 | 199.60 | 66923.70 |
| Unknown | 12 (92.3) | 497.00 | 17.00 | 1828.90 | ||
| Not infected | 163 (99.4) | 776.95 | 34.90 | 18755.50 | ||
| Male total | 244 (99.2) | 835.35 | 17.00 | 6923.70 | ||
| Female | PCR‐confirmed | 40 (100) | 1183.85 | 270.00 | 6038.40 | |
| Unknown | 10 (100) | 1434.30 | 503.20 | 1838.30 | ||
| Not infected | 93 (98.9) | 1106.30 | 28.30 | 11666.90 | ||
| Female total | 143 (99.3) | 1155.50 | 28.30 | 11666.90 | ||
| Total | 387 (99.2) | 923.60 | 17.00 | 66923.70 | ||
| ≥60 years (n = 23) | Male | PCR‐confirmed | 5 (100) | 771.90 | 114.40 | 7308.20 |
| Unknown | 0 (0) | – | – | – | ||
| Not infected | 10 (100) | 656.80 | 158.50 | 1224.90 | ||
| Male total | 15 (100) | 705.10 | 114.40 | 7308.20 | ||
| Female | PCR‐confirmed | 2 (100) | 1588.80 | 1403.90 | 1773.70 | |
| Unknown | 0 (0) | – | – | – | ||
| Not infected | 5 (83.3) | 831.15 | 10.10 | 1224.90 | ||
| Female total | 7 (87.5) | 1076.75 | 10.10 | 1773.70 | ||
| Total | 22 (95.7) | 733.50 | 10.10 | 7308.20 | ||
| 1008 (99.6) | 1022.40 | 10.10 | 66923.70 | |||
Abbreviations: COVID‐19, coronavirus disease‐2019; HCW, healthcare worker; IgG, immunoglobulin G; SARS‐CoV‐2, severe acute respiratory syndrome coronavirus 2.