San Diego Ballet School students wear protective masks backstage during a performance of “The Nutcracker”, presented by the San Diego Ballet in a drive-in performance at a parking lot in San Diego, California, December 5, 2020. (Photo by Bing Guan/Reuters)

Afghan vendors sort out oranges for sale at a wholesale market in the Bati kot district in Nangarhar province, Afghanistan, 04 December 2020. The orange fruit floods markets across Afghanistan due to bumper crop in the winter season. Oranges are rich in vitamin C, which may reduce severity of the common cold. (Photo by Ghulamullah Habibi/EPA/EFE)

Musician Jerome Gamble plays guitar to accompany the recorded music as it is played to the city below on September 01, 2020 in Bristol, England. Created by Bristol-based artist Luke Jerram and composer Dan Jones, “Sky Orchestra – A Moment in Time” was first performed at the Bristol International Balloon Fiesta in 2003. (Photo by Finnbarr Webster/Getty Images)

Cheerleaders from the “All Japan Cheer Organization” perform in protective masks due to COVID-19, to cheer people up in front of Shimbashi Station, one day before the start of the Tokyo 2020 Olympics in Tokyo, Japan on July 22, 2021. (Photo by Androniki Christodoulou/Reuters)

Workers wearing face masks as a protection against the coronavirus disease (COVID-19) carry roasted pigs, locally known as “lechon”, at a restaurant, in Quezon City, Metro Manila, Philippines, December 21, 2020. (Photo by Lisa Marie David/Reuters)

A cat sits on the empty Great Wall on February 23, 2021 in Beijing, China. Affected by the new coronavirus (COVID-19), the number of visitors to Mutianyu Great Wall in 2020 dropped by about 60%. (Photo by Lintao Zhang/Getty Images)

Vanessa Low of Team Australia celebrates after winning gold in the Women’s Long Jump - T63 Final on day 9 of the Tokyo 2020 Paralympic Games at Olympic Stadium on September 02, 2021 in Tokyo, Japan. Low jumped 5.28m to set a new world record. (Photo by Athit Perawongmetha/Reuters)

Palestinian women wearing protective masks amid the COVID-19 pandemic pose in their traditional attire during an event to celebrate the Palestinian Traditional Dress Day and protest Israel's plan to annex parts of the occupied West Bank, in the village of Al-Jiftlik in the Jordan Valley region, on July 26, 2020. (Photo by Jaafar Ashtiyeh/AFP Photo)