2 ms·
If one looks at a typical FFP2 or FFP3 mask, they have two years written on them - 2001 and 2009 - which reference the years the standards for such masks were p
by blub 5y ago
If one looks at a typical FFP2 or FFP3 mask, they have two years written on them - 2001 and 2009 - which reference the years the standards for such masks were published.
Now this pandemic started around 2020, which is more than decade later.
So recommending cloth masks was and is indeed farcical. Doing it after recommending against mask usage is idiocy. And no, the world’s collective scientific understanding of masks didn’t change between 2020 and 2021.