STAG-IH supports mask1 use by the general public in the community to decrease the risk of infection, primarily in these contexts: Active and widespread community transmission is occurring with high attack rates in the population; all other essential public health measures (e.g.,surveillance and response, physical distancing, personal hygiene and social measures) are in place; and mask use is introduced, with instructions for use, as an additional layer of physical distancing to prevent transmission from persons who may be infected but not yet manifesting symptoms and to maintain functions of societies (e.g., activities in closed environmentswithout efficient air exchanges such as commuting on public transportation and over-the-counter consultations in pharmacies).Decision makers should explicitly communicate to the public that persons feeling unwell and/or symptomatic should stay home for self-isolation and that mask use alone or incorrect use of masks will not protect others from infection.

 

 

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