Table 2.
Serological data from 10 convalescent patients who were tested twice (1 week apart)
| Patients | Onset | 1st Test | 2nd Test | IgM titer (1st test), AU/mL | IgM titer (2nd test), AU/mL | IgG titer (1st test), AU/mL | IgG titer (2nd test), AU/mL |
|---|---|---|---|---|---|---|---|
| 38 | 20/1/2020 | 8/3/2020 | 15/3/2020 | 114.81 (+) | 36.14 (+) | 338.99 (+) | 210.33 (+) |
| 39 | 27/1/2020 | 9/3/2020 | 16/3/2020 | 176.29 (+) | 50.21 (+) | 206.03 (+) | 88.74 (+) |
| 40 | 23/1/2020 | 9/3/2020 | 16/3/2020 | 147.93 (+) | 40.35 (+) | 965.24 (+) | 201.34 (+) |
| 41 | 16/1/2020 | 6/3/2020 | 13/3/2020 | 45.35 (+) | 13.54 (+) | 134.35 (+) | 50.33 (+) |
| 42 | 20/1/2020 | 8/3/2020 | 15/3/2020 | 78.34 (+) | 21.36 (+) | 112.56 (+) | 47.21 (+) |
| 43 | 24/1/2020 | 6/3/2020 | 14/3/2020 | 307.14 (+) | 80.79 (+) | 420.72 (+) | 97.06 (+) |
| 44 | 27/1/2020 | 8/3/2020 | 15/3/2020 | 181.75 (+) | 47.03 (+) | 1077.09 (+) | 242.25 (+) |
| 45 | 26/1/2020 | 6/3/2020 | 15/3/2020 | 41.68 (+) | 12.36 (+) | 233.06 (+) | 95.15 (+) |
| 46 | 26/1/2020 | 8/3/2020 | 15/3/2020 | 20.1 (+) | 9.28 (‐) | 162.79 (+) | 88.68 (+) |
| 47 | 25/1/2020 | 6/3/2020 | 12/3/2020 | 155.64 (+) | 48.49 (+) | 279.45 (+) | 200.58 (+) |
Note: (+) positive result; (‐) negative result; titer ≤10 AU/mL indicates a negative result according to the manufacturer's instructions.
Abbreviations: AU, arbitrary unit; IgG, immunoglobulin G; IgM, immunoglobulin M.