Ontario Public Health Update on Facemasks

Ontario Public Health Update on Facemasks

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The Public Health Agency of Canada (PHAC) updated their guidance on November 3, 2020, regarding
non-medical (cloth) masks (NMMs) to now recommend that NMMs should be made of at least three layers, with the middle layer being a filter-type fabric. This aligns with guidance issued from the World Health Organization in June 20202. Using the most available evidence, this document provides responses to frequently asked questions regarding the updated advice on NMMs, as well as general questions, including how these differ from medical masks, and recommendations regarding construction of nonmedical masks in order for these to function effectively.