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Results of SARS-CoV-2 spike-specific IgA test
| Sample cohorta | Positive (N) | Negative (N) | Total (N) | Positive (%) | Negative (%) |
|---|---|---|---|---|---|
| Conv (>d15 Sx) | 138 | 59 | 197 | 70% | 30% |
| Ctrl-2020 (Jan 2020) | 0 | 45 | 45 | 0% | 100% |
| Ctrl-Pre (Pre-COVID) | 1 | 87 | 88 | 1% | 99% |
| hCoV | 0 | 22 | 22 | 0% | 100% |
| All controls | 1 | 154 | 155 | 1% | 99% |
Samples analyzed at 1/200 serum dilution
