March 2020 AD: WHO does not recommend masks. No evidence face coverings work.
24 July 2020 AD: Some evidence face coverings may slightly reduce the spread. Masks are now mandatory by law.
332 BC: “Anyone with such a defiling disease must wear torn clothes, let their hair be unkempt, cover the lower part of their face and cry out, ‘Unclean! Unclean!’