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A comment on 18.7 Million Americans Vaccinated. Parent comment

Re:18.7 Million Americans Vaccinated by ergocoder on Monday January 25, 2021 @12:56AM (#25899804)
Learn about what? Masks are effective against flu? We know that for a century.
[ Parent | on HN ]
Re:18.7 Million Americans Vaccinated by hanniabu on Monday January 25, 2021 @01:39AM (#25900045)
This isn't the flu and they didn't know much about it at all initially
[ Parent | on HN ]