Review Article

Preventing Airborne Disease Transmission: Review of Methods for Ventilation Design in Health Care Facilities

Table 1

Experimental expiratory droplet size data.

Study Measurement technique Expiration type 𝐷 m i n [μm] 𝐷 m a x [μm] Geometric mean [μm] Geometric standard deviation [μm]

Duguid [14] Microscopy Coughing 1 2000 14 2.6
Duguid [14] Microscopy Sneezing 1 2000 8.1 2.3
Loudon and Roberts [19] Microscopy Coughing 1>1471 12 8.4
Papineni and Rosenthal [16] OPC1 Talking<0.6 2.5 0.8 1.5
Papineni and Rosenthal [16] OPC Nose breathing<0.6 2.5 0.8 1.5
Papineni and Rosenthal [16] OPC Mouth breathing<0.6 2.5 0.7 1.4
Papineni and Rosenthal [16] OPC Coughing<0.6 2.5 0.7 1.5
Papineni and Rosenthal [16] ATEM2 Mouth breathing<0.6 2.5 1.2 1.6
Chao et al. [18] IMI3 Talking 2 2000 12.6 3.2
Chao et al. [18] IMI Coughing 2 2000 13.1 3.6

1OPC: optical particle counter, 2ATEM: analytical transmission electron microscope, 3IMI: interferometric Mie imaging.