12 h, jan 29, 2020 y - Forbes: Surgical masks "too loose to really be effective in stopping the virus"
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https://www.forbes.com/sites/leahrosenbaum/2020/01/29/should-you-get-a-face-mask-a-guide-to-coronavirus-face-protection/#2c188c3c30a5Added to timeline:
Date:
12 h, jan 29, 2020 y
Now
~ 5 years and 8 months ago