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Blue surgical face masks are only 10% effective in preventing COVID infection, new study finds – Daily Mail

Most blue surgical face masks used by many during the pandemic are not enough to avoid people from being infected with COVID-19, an alarming new study has found. 

http://archive.today/2021.08.22-050636/https://www.dailymail.co.uk/news/article-9914969/Popular-blue-surgical-face-masks-NOT-stop-people-infected-COVID-19.html