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Knowledge Circle

National Collaborating Centre for Environmental Health
Masking During COVID-19 Pandemic

National • French, English • PPE, Medical Tips/Forms

The use of masks as a control measure to prevent the transmission of SARS-CoV-2 has raised many questions about their role and their limit of protection. This document presents the main types of masks, their degree of effectiveness for protection against pathogenic risks as well as the factors to consider for safe use.


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