Earlier quoted context omitted.
> "I don't believe this one. Japanese might wear masks but not all of them wear masks and they are not N95 masks." This is a very western belief. Why do we continue to think that asians wearing masks are stupid? Most importantly, say masks prevent 50% of transmission, and the majority of transmission is via the air (highly plausible), then that would mean drastically less transmission. Even an N20 mask that reduces r…
I certainly didn't say asians wearing masks was stupid. My implication is they are not effective for either COVID-19 nor cold or Flu viruses. Japanese don't wear N20 masks. They basically wear a piece of cloth that seals no where. https://askul.c.yimg.jp/img/product/3L2/8475270_3L2.jpg That is not a N20 mask. Further they don't all wear them. The majority of people wearing masks in Japan are for hay fever.
> less than 50% wear them.
I looked a photo taken in Japan today - certainly looks like more than 50% to me - but hard to get facts on and I only looked at the first photo I could find.
> The majority of people wearing masks in Japan are for hay fever.
I.e. the mask is worn to reduce inhalation of small particles: surely you are contradicting yourself (you say they “seal nowhere” you are implying that they have no effect and that anyone using one for hayfever is mistaken).