Table 2.
Viral shedding
| Variable | NP swab | Coarse aerosol | Fine aerosol |
| Culture passage | |||
| Valid assays | 169 | NA | 134 |
| Positive (%) | 150 (89) | NA | 52 (39) |
| Quantitative culture (FFU) | |||
| Valid assays | 159 | NA | 136 |
| Positive (%) | 98 (62) | NA | 41 (30) |
| GM (GSD) | 2.5 × 103 (23) | NA | 37 (4.4) |
| Range | ND – 5.1 × 105 | NA | ND – 1.1 × 103 |
| RNA copies | |||
| Valid assays | 218 | 218 | 218 |
| Positive (%) | 211 (97) | 88 (40) | 166 (76) |
| GM (GSD) | 8.2 × 108 (52) | 1.2 × 104 (14) | 3.8 × 104 (13) |
| Range | ND – 3.8 × 1011 | ND – 4.3 × 108 | ND – 4.4 × 107 |
GSD, geometric SD (only positive samples were included in computation of GM and GSD); NA, not assayed; ND, not detected.