"However, the following potential risks should be carefully taken into account in any decision-making process:
• self-contamination that can occur by touching and reusing contaminated mask • depending on type of mask used, potential breathing difficulties • false sense of security, leading to potentially less adherence to other preventive measures such as physical distancing and hand hygiene • diversion of mask supplies and consequent shortage of mask for health care workers • diversion of resources from effective public health measures, such as hand hygiene"
Also, "diversion of mask supplies" is a ridiculous excuse. Even an improvised mask (bandana, something handmade, etc.) is better than nothing at all. And if you already have full-blown N95s, might as well use 'em, taking steps¹ to sterilize them and maximize their reusability (I have two N95s, one previously used long before the COVID-19 outbreak, and one new one from my grandpa who found a box of 'em with his tools; I cycle between them, giving each at least 72 hours between uses per the rule of thumb that SARS-CoV-2 won't survive longer than that on an N95 mask, and if I ever need to reuse one sooner I'm content with sacrificing my oven for decontamination purposes. I also have some work gloves that I similarly cycle through, but I also recognize that these ain't designed to resist much contamination so I still take care to avoid needlessly touching things.).
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¹: https://www.msn.com/en-xl/lifestyle/coronavirus/how-to-clean...
> Masks may give a person a false sense of security and are likely to increase the number of times a person will touch their own face (e.g., to adjust the mask).
http://www.bccdc.ca/health-info/diseases-conditions/covid-19...
I didn't make any statement about whether I thought non-medical masks were a good idea for everyone to wear or not...