Researchers who reviewed 172 studies about the effectiveness of face masks, eye protection, and physical distancing in reducing the spread of COVID-19 confirm what many health officials have already been saying – they work.
The World Health Organization-funded study looked at research carried out in 16 countries on six continents in order to prepare clear guidance on the issue.
The study provides confidence that people who are making the recommendations are making them based on sound science.
In British Columbia, early advice on wearing face masks to prevent the spread of COVID-19 discouraged their use in the community, with the caution that they can give the person wearing a mask a false sense of security, and lead to extra face touching to adjust the mask.
In April, the message started to shift, and by late May face masks were recommended in instances where physical distancing could not be maintained.
The new study confirms face masks are effective both in health care and community settings.
Any type of face mask is going to help reduce the transmission of COVID-19 in the community. Those who wear a face mask incorrectly, leave it hanging around their chin, or frequently adjust it, risk infecting themselves. As long as they put it in front of their face when close to other people, they are reducing the risk of spreading the virus.
Non-elastic materials must be used to avoid increasing its pore size and multiple layers are important. Depending on the material, at least three layers should be used.
The WHO recommends a face mask that fits snugly around the edges, with an inner layer made out of a fabric like cotton that absorbs moisture, and an outer layer made from polypropylene or polyester that repels moisture.
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Learn how to stay safe by enrolling in a mask fitting test which is a requirement for many workplaces and school admissions or the available masks for sale by visiting our face mask sale page.
https://www.healthline.com/health-news/face-masks-importance-battle-with-covid19
https://www.cdc.gov/coronavirus/2019-ncov/downloads/cloth-face-coverings-information.pdf