One interesting thing I done is to check how big is the questioning of Mask-efficiency between two countries. In my case, Brazil (my original country, which is in a very bad situation now) and Poland (where I live, and with a relatively good pandemic control).

So I checked for the same term (Do masks work?) in Portuguese and Polish at Google trends.

No surprise, Brazilians are much more skeptical about mask-efficiency. Maybe that contributed to the worse situation there?

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