A nurse at St. Joseph's Hospital wears a unique mask as the hospital celebrates the release of a COVID-19 patient after 45 days in their care during the outbreak of the coronavirus disease (COVID-19) in Orange, California, U.S., May 5, 2020. (Photo by Mike Blake/Reuters)

Coronavirus infection (COVID-19) is still continuing in the country, a guard of Gyeongbokgung Palace wears a protective mask with a goblin pattern at the entrance of the palace, which is currently not being opened to the public due to Covid-19 in Seoul, South Korea on June 18, 2020. (Photo by Chris Jung/NurPhoto via Getty Images)

A woman walks past a mural amid the outbreak of the coronavirus disease (COVID-19) in Manchester, Britain, January 4, 2021. (Photo by Phil Noble/Reuters)

A server carries mugs during a barrel tapping at a beer garden near Theresienwiese where Oktoberfest would have started today as COVID-19 continues in Munich, Germany, September 19, 2020. (Photo by Andreas Gebert/Reuters)

Travellers wait in queue to test for COVID-19 at a train station in Mumbai, India, Tuesday, November 30, 2021. (Photo by Rafiq Maqbool/AP Photo)

A boy sells balloons in front of a closed market as the government reduces market business hours after new cases of COVID-19 were reported across the country in Peshawar, Pakistan, 03 August 2021. Countries around the world are taking increased measures to stem the widespread of the COVID-19 disease. (Photo by Arshad Arbab/EPA/EFE)

A relative performs rituals for a man who died of coronavirus disease (COVID-19), before his cremation at a crematorium in New Delhi, India, November 19, 2020. (Photo by Danish Siddiqui/Reuters)

A robot used to assist Covid-19 patients is seen in an elevator on December 5, 2020 in New Delhi, India. The “Mitra” robot can connect patients with their loved ones, and can assist healthcare workers on the frontlines of the pandemic by minimisng the risk of infections caused by close contact. The Yatharth Hospital, which is treating Covid-19 patients in Noida, on the outskirts of New Delhi, is one of a handful of hospitals in India that has started to use robots. (Photo by Anindito Mukherjee/Getty Images)