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A comment on Why Asians wear surgical masks in public (2014). Parent comment

Re:Why Asians wear surgical masks in public (2014) by cm2187 on Monday March 18, 2019 @04:59AM (#19419563)
And does it work? Like is there a materially lower prevalence of cold/flu in Japan than in countries of similar climate?
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Re:Why Asians wear surgical masks in public (2014) by bpyne on Monday March 18, 2019 @10:24AM (#19421245)
It could be done more out of politeness than effectiveness in reducing transmission. It would make a lot of sense in places with a high population density.
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