Table 1.
Correlation between binding antibody titer and microneutralization antibody titer.
| MN Titer | Anti-RBD IgG (AU/mL) | Anti-N IgG (S/CO) | ||||
|---|---|---|---|---|---|---|
| <50 (n = 1) |
50–999 (n = 35) |
≥1000 (n = 22) |
<1.4 (n = 5) |
1.4–4.9 (n = 26) |
≥5.0 (n = 27) |
|
| Against wild type lineage A (HKU-001a) |
||||||
| 10–20 | 0 (0) | 15 (42.9) | 1 (4.5) | 3 (60) | 7 (26.9) | 6 (22.2) |
| ≥40 | 1 (100) | 20 (57.1) | 21 (95.5) | 2 (40) | 19 (73.1) | 21 (77.8) |
| Against beta variant (B.1.351) | ||||||
| <10 | 1 (100) | 30 (85.7) | 20 (90.9) | 5 (100) | 23 (88.5) | 23 (85.2) |
| 10–20 | 0 (0) | 5 (14.3) | 2 (9.1) | 0 (0) | 3 (11.5) | 4 (14.8) |
| ≥40 | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
Data represent no. of patients (%).