Figure C.3. Patterns of air exchange during daily activities.

Figure C.3Patterns of air exchange during daily activities

(A) Demonstration of how a walking person may entrain air into their wake (Tang et al., 2006). (B) Demonstration of how opening a door may transport air from inside an isolation room to the outside, during the door-opening motion itself (Tang et al., 2005). (C) Demonstration of how an open door can allow air of different temperatures and densities to mix and exchange (Tang et al. 2005).

From: Annex C, Respiratory droplets

Cover of Natural Ventilation for Infection Control in Health-Care Settings
Natural Ventilation for Infection Control in Health-Care Settings.
Atkinson J, Chartier Y, Pessoa-Silva CL, et al., editors.
Copyright © 2009, World Health Organization.

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