means wearing one face mask on top of another. An example is wearing a
disposable mask underneath a cloth mask.
In early February 2021, the U.S. Centers for Disease Control and Prevention released new research that found wearing a cloth mask over a surgical mask offers more protection against the coronavirus, as does tying knots on the ear loops of surgical masks. This has resulted in new CDC guidelines for Americans on improving mask fit, which includes adding layers of material to a mask (either by using cloth masks with multiple layers of fabric, or by wearing a disposable mask under a cloth mask).
This change comes as new, more contagious COVID-19 variants are circulating. So far, the Public Health Agency of Canada has not changed its recommendations on mask use in Canada. In November 2020, PHAC did update its recommendations to say non-medical masks should be made of at least three layers, with the middle layer being a filter-type fabric.
Currently in Ontario, you must wear a non-medical mask or face covering that covers your nose, mouth and chin inside any business or public place. Properly wearing a mask inside public spaces and maintaining 2 metres physical distance from others are important measures to reduce the spread of COVID-19. Masks will not stop you from getting COVID-19, but can help protect others.
While there is no instruction to ‘double mask’ in Canada,
consider doing so if it makes you feel more comfortable (taking care to ensure
it does not make breathing difficult). Add an extra layer to your cloth mask or
try wearing a cloth mask over a disposable mask.
The best advice to prevent COVID-19 remains staying home as much as possible and avoiding contact with other people you do not live with.