A few photos during Spanish flu in 1918. People had good judgment. #Masks4All

Officials checking cleaners wearing masks.

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A few photos during Spanish flu in 1918. People had good judgment. #Masks4All

Police officers.

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A few photos during Spanish flu in 1918. People had good judgment. #Masks4All

Red Cross selling masks.

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A few photos during Spanish flu in 1918. People had good judgment. #Masks4All

Base ball players with masks on.

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A few photos during Spanish flu in 1918. People had good judgment. #Masks4All

Hair cut was done outside.

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A few photos during Spanish flu in 1918. People had good judgment. #Masks4All

Students in Japan.

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A few photos during Spanish flu in 1918. People had good judgment. #Masks4All

San Francisco Chronicle ad. Wear a mask going to work, at work, going home, and at home.

(Mask can save lives and also economy.)

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Korea has 'not' been wearing masks all along, from the start of covid19. It became almost universal only as we saw fast growth on Feb 19-21. See this thread to compare with Italy and the US.

#masks4all

8/9 https://twitter.com/slowblogger/status/1245208405599387650

2 weeks later, it started reducing active cases.

Read this thread.

9/9 https://twitter.com/slowblogger/status/1244877099061501954