In this March 30, 2020, photo, Zandile Mlotshwa, 21, cashier at Spar supermarket in the Norwood suburb of Johannesburg, counts her cash at the end of her shift. From South Africa to Italy to the U.S., grocery workers – many in low-wage jobs – are manning the front lines amid worldwide lockdowns, their work deemed essential to keep food and critical goods flowing. (Photo by Jerome Delay/AP Photo)

Some bats in the forested area of Guapiles, Costa Rica, 21 April 2020. (Photo by Jeffrey Arguedas/EPA/EFE)

Children play in water to beat the heat during the Muslim holy month of Ramadan amid lockdown of the Sindh province due to the ongoing coronavirus COVID-19 disease pandemic in Karachi, Pakistan, 28 April 2020. Muslims around the world celebrate the holy month of Ramadan, by praying during the night time and abstaining from eating, drinking, and sexual acts during the period between sunrise and sunset. Ramadan is the ninth month in the Islamic calendar and it is believed that the revelation of the first verse in Koran was during its last 10 nights. (Photo by Shahzaib Akber/EPA/EFE)

Agriculture Secretary Sonny Perdue adjusts his mask before an event in the Roosevelt Room of the White House, Tuesday, May 19, 2020, in Washington. (Photo by Evan Vucci/AP Photo)

Idania Espanola, 63, poses for a photo showing a bra that she will adapt into two face masks, amid the spread of the new coronavirus in Cojimar, Cuba, east of Havana, Tuesday, March 31, 2020. (Photo by Ramon Espinosa/AP Photo)

Linda Evangelista, Naomi Campbell, Polly Mellon, and Christy Turlington, The Fashion Group International's 6th Annual “Night of 100 Stars” at the The Plaza Hotel in New York City, New York on October 29, 1989. (Photo by Ron Galella/WireImage)

Palestinian men perform fire breathing on the beach as an entertainment for children during the summer vacation in Gaza City on August 1, 2019. (Photo by Mohammed Abed/AFP Photo)

A bride and groom jump over a skipping rope as they pose during a wedding photo shoot at a park in Pyongyang on April 18, 2019. (Photo by Ed Jones/AFP Photo)