A member of the public wears a pandemic face mask ahead of the prime minister announcing the government's Covid-19 winter strategy on September 13, 2021 in Manchester, England. Tomorrow, British Prime Minister Boris Johnson will set out his plan to manage Covid-19 through the winter, including what actions would need to be taken if the NHS hospital system were at risk of being overwhelmed. (Photo by Christopher Furlong/Getty Images)

Students wearing masks rest amid the coronavirus disease (COVID-19) pandemic in Seoul, South Korea, August 25, 2020. (Photo by Kim Hong-Ji/Reuters)

Devotees wearing personal protective equipment (PPE), carry a chariot of Pachali Bhairab amid the spread of coronavirus disease (COVID-19), in Kathmandu, Nepal on October 21, 2020. (Photo by Navesh Chitrakar/Reuters)

A civil defence volunteer wearing a Covid-19 coronavirus-themed helmet holds a placard as he takes part in an awareness campaign at a market in New Delhi on November 25, 2020. (Photo by Sajjad Hussain/AFP Photo)

A GDR Trabant car drives through the city during the local coronavirus disease (COVID-19) lockdown in Dresden, Germany, December 14, 2020. (Photo by Matthias Rietschel/Reuters)

A woman wearing a face mask rides a bicycle with a child, following an outbreak of the coronavirus disease (COVID-19) in Wuhan, Hubei province, China on February 8, 2021. (Photo by Aly Song/Reuters)

Customers are seen in front of a shop that reopened in central Copenhagen, Denmark, 01 March 2021. Shops reopened after several months of closure due to the coronavirus COVID-19 pandemic. (Photo by Philip Davali/EPA/EFE)

A woman attends the annual Easter Parade and Bonnet Festival on Fifth Avenue, amid the coronavirus disease (COVID-19) pandemic, in New York City, U.S., April 4, 2021. (Photo by Eduardo Munoz/Reuters)