People, all wearing masks to prevent the spread of the COVID-19, take a ride in a metro in Istanbul, Turkey, Thursday, December 2, 2021. The coronavirus's omicron variant kept a jittery world off-kilter Wednesday, as reports of infections linked to the mutant strain cropped up in more parts of the globe, and one official said that the wait for more information on its dangers felt like “an eternity”. (Photo by Francisco Seco/AP Photo)
