Table 1.

Transfer rate between states (min⁻¹).

Description		Input value	Sources
From state 1 (room air)
λ12	Deposition rate of respirable particles on textile surfaces	5.9 × 10−3	Nicas and Jones, 2009
λ13	Deposition rate of respirable particles on nontextile surfaces	6.6 × 10−4	Nicas and Jones, 2009
λ16	Rate constant by inhalation by an HCW	6.7 × 10−4	AIST, 2007
λ17	Inactivation rate of SARS-CoV-2 in air	1.1 × 10−2	van Doremalen et al., 2020
λ18	Air change rate	3.3 × 10−2	HEAJ, 2013
From state 2 (textile surfaces)
λ21	Resuspension from textile surfaces	0	Nicas and Jones, 2009
λ24	Transfer rate from textile surfaces to HCW’s hands	2.8 × 10−6	Bean et al., 1982, Nicas and Jones, 2009
λ27	Inactivation rate of SARS-CoV-2 on textile surfaces	2.6 × 10−2	Chin et al., 2020
From state 3 (nontextile surfaces)
λ31	Resuspension from nontextile surfaces	0	Nicas and Jones, 2009
λ34	Transfer rate from nontextile surfaces to HCW’s hands	4.0 × 10−4	Bean et al., 1982, Nicas and Jones, 2009
λ37	Inactivation rate of SARS-CoV-2 on nontextile surfaces	2.1 × 10−3	van Doremalen et al., 2020
From state 4 (HCW’s hands)
λ42	Transfer rate from HCW’s hands to textile surfaces	2.5 × 10−3	Bean et al., 1982, Nicas and Jones, 2009
λ43	Transfer rate from HCW’s hands to nontextile surfaces	4.0 × 10−2	Bean et al., 1982, Nicas and Jones, 2009
λ45	Transfer rate from HCW’s hands to facial membranes	5.8 × 10−3	Nicas and Best, 2008, Rusin et al., 2002
λ47	Inactivation rate of SARS-CoV-2 on HCW’s hands	2.8 × 10−3	Hirose et al., 2020

Abbreviations: HCW, healthcare worker; SARS-CoV, severe acute respiratory syndrome coronavirus.