TABLE II. Numbers of Particles in Different Initial Diameter Ranges Emitted in One Cough and One Sneeze According to Duguid.
| Diameter Range (μm) | Number of Particles in a Cough | Number of Particles in a Sneeze |
|---|---|---|
| 1–2 | 50 | 26,000 |
| 2–4 | 290 | 160,000 |
| 4–8 | 970 | 350,000 |
| 8–16 | 1600 | 280,000 |
| 16–24 | 870 | 97,000 |
| 24–32 | 420 | 37,000 |
| 32–40 | 240 | 17,000 |
| 40–50 | 110 | 9000 |
| 50–75 | 140 | 10,000 |
| 75–100 | 85 | 4500 |
| 100–125 | 48 | 2500 |
| 125–150 | 38 | 1800 |
| 150–200 | 35 | 2000 |
| 200–250 | 29 | 1400 |
| 250–500 | 34 | 2100 |
| 500–1000 | 12 | 1000 |
| 1000–2000 | 2 |
Source: Data from Duguid, “The Size and Duration of Air-Carriage of Respiratory Droplets and Droplet-Nuclei.” Journal of Hygiene 4:471–480, Table 3 (1946).