German Chancellor Angela Merkel puts on her face mask after a news conference in Berlin last week. Germany has introduced new requirements for medical-grade masks to be worn on public transit and in shops.

German Chancellor Angela Merkel puts on her face mask after giving a press conference on the Covid-19 situation in Germany at the house of the Federal Press Conference (Bundespressekonferenz), on January 21, 2021 in Berlin. (Photo by Michael Kappeler / POOL / AFP) (Photo by MICHAEL KAPPELER/POOL/AFP via Getty Images)