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Results of the N protein of SARS-CoV assay for sera from patients with SARS in the serological test-negative group
| Days after onset of symptoms | No. of patients with positive sera/total no. of patients with SARS (%) |
|---|---|
| 1-5 | 34/133 (25.6) |
| 6-10 | 14/84 (16.7) |
| 11-15 | 4/43 (9.3) |
| 16-20 | 0/24 (0) |
| 21-27 | 0/10 (0) |
