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Experts who study airborne particles still recommend wearing masks in crowded indoor settings
May 17, 2022
With masks now optional in most public spaces and Quebec recently joining the rest of Canada in relaxing its rules, the mental gymnastics required to figure out whether or not masking is necessary might feel tantamount to performing advanced calculus.
Yet even as the rules shift for where masks are required, some people may still choose to wear them — as they did before mandates came into effect.
To help Canadians evaluate what’s best for their own health and the health of their loved ones, CBC News asked experts who study airborne particles to weigh in about when, where and for whom masking is still recommended.
The message from public health officials for much of the pandemic was that masks work best if everyone wears them.
But if you want to protect yourself in an indoor public space where many people will be unmasked, a KN95 or higher offers good protection, according to University of British Columbia mechanical engineering professor Steve Rogak.
Read more: https://www.cbc.ca/news/health/mask-optional-canada-advice-1.6455209