Table 1.
Airborne virus-like and bacteria-like particle (VLP and BLP) concentrations (mean ± standard deviation) in different environments.
| Location | VLP concentration A particles/m3 (log10 transformed)B | BLP concentration A particles/m3 (log10 transformed)B | Virus-to-bacteria ratio |
|---|---|---|---|
| Classroom | 5.7 ± 3.3 × 105 (5.7 ± 0.3) | 6.5 ± 3.4 × 105 (5.8 ± 0.3) | 0.9 |
| Daycare Center | 4.5 ± 2.0 × 105 (5.6 ± 0.2) | 5.0 ± 1.2 × 105 (5.7 ± 0.1) | 0.9 |
| Dining Facility | 3.9 ± 0.4 × 105 (5.6 ± 0.0) | 4.3 ± 0.8 × 105 (5.6 ± 0.1) | 0.9 |
| Health Center | 2.9 ± 2.3 × 105 (5.2 ± 0.7) | 3.4 ± 1.6 × 105 (5.5 ± 0.2) | 0.9 |
| House 1 | 5.9 ± 3.9 × 105 (5.7 ± 0.4) | 5.6 ± 2.7 × 105 (5.7 ± 0.2) | 1.1 |
| House 2 | 5.2 ± 1.5 × 105 (5.7 ± 0.1) | 6.5 ± 1.5 × 105 (5.8 ± 0.1) | 0.8 |
| House 3 | 4.6 ± 4.2 × 105 (5.5 ± 0.4) | 6.8 ± 5.6 × 105 (5.7 ± 0.4) | 0.7 |
| Office | 4.9 ± 2.5 × 105 (5.6 ± 0.3) | 4.8 ± 2.0 × 105 (5.7 ± 0.2) | 1.0 |
| Outdoors | 1.2 ± 0.7 × 106 (6.0 ± 0.3) | 8.4 ± 4.4 × 105 (5.9 ± 0.2) | 1.4 |
A
Concentrations are based on three independent samples and have been corrected for the number of particles present on unexposed filters.
B
Mean and standard deviation of the log10-transformed data, or the geometric mean and geometric standard deviation.