gollum123 shared this article from MarketWatch:
Do masks really work? Ask the dozens of Starbucks customers who tested positive for COVID-19 in Seoul this month after a woman with coronavirus sat under one of the cafe’s air-conditioners. According to a local news report, at least 56 coronavirus cases have been linked to that one customer. The kicker: The four masked workers avoided infection…
“This speaks volumes about the role masks can play,” Ma Sang Hyuk, a pediatric infectious diseases physician in South Korea, explained to Bloomberg News. “Masks may not provide 100% protection, but there’s nothing out there that’s as effective.”
Local authorities made it mandatory this week for everybody to wear masks both indoors and outdoors, as the greater Seoul area has seen a surge in coronavirus cases.
of this story at Slashdot.
Source:: Slashdot