Table 3.
Concentrations of antibodies anti SARS-CoV-2 in the vaccinated subjects measured by ELISA (QuantiVac ELISA IgG, Euroimmun) and Maglumi (IgG anti-RBD, SNIBE) methods, expressed both in the respective units of each manufacturer and in binding antibodies units.
| ELISA Levels | Maglumi Levels | ||||
|---|---|---|---|---|---|
| Median | Interquartile Range | Median | Interquartile Range | ||
| Manufacturer-defined units/mL | 15 days after the first dose | 27.2 | 16.4–42 | 18.1 | 6.6–27.7 |
| 15 days after the second dose | 704.5 | 388.5–940 | 499 | 335.9–756.8 | |
| 3 months after the second dose | 129.6 | 95.2–244 | 84.6 | 47.7–195 | |
| Binding antibody units/mL (WHO) | 15 days after the first dose | 87 | 58.1–113.8 | 78.4 | 30.8–113 |
| 15 days after the second dose | 2254 | 1243–3008 | 2160 | 1454–3277 | |
| 3 months after the second dose | 366.1 | 206.7–844 | 414.7 | 305–781 | |