Table 2.
Number of air samples (positive/negative) stratified by exposures.
| Exposure | Positive air samples, n (%) | Negative air samples, n (%) | Total air samples, n |
|---|---|---|---|
| All air samplesa | 129 (19.4) | 536 (80.6) | 665 |
| Symptomsb | |||
| Symptomatic patients | 95 (21.1) | 355 (78.9) | 450 |
| Asymptomatic patients | 6 (7.2) | 77 (92.8) | 83 |
| Duration of symptomsb | |||
| Symptom duration ≤ 4 days | 52 (26.8) | 142 (73.2) | 194 |
| Symptom duration > 4 days | 44 (14.5) | 260 (85.5) | 304 |
| Variant of SARS-CoV-2b | |||
| Wildtype | 18 (20.7) | 69 (79.3) | 87 |
| B.1.1.7 | 78 (22.0) | 276 (78.0) | 354 |
| Method of air sampling | |||
| Singing/loud talking | 101 (18.8) | 435 (81.2) | 536 |
| Exhaling | 28 (21.7) | 101 (78.3) | 129 |
n number, SARS-CoV-2 severe acute respiratory coronavirus 2.
aObtained through singing/loud talking and exhaling.
bObtained through singing/loud talking.