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RBD and NTD ELISA results from the plasma of COVID‐19 patients
| Numbers of sample | RBD positive (%) | NTD positive (%) | |
|---|---|---|---|
| Days 1–7 | 21 | 12 (57.1) | 1 (4.8) |
| Days 8–14 | 27 | 16 (59.3) | 11 (40.7) |
| Days 15–21 | 12 | 12 (100) | 7 (58.3) |
| Days 22–28 | 14 | 14 (100) | 10 (71.4) |
| Days >28 | 153 | 150 (98.0) | 135 (88.2) |
| Total | 227 | 204 (89.9) | 164 (72.2) |
