Family members of patients hospitalized with COVID-19 line up with empty oxygen tanks in an attempt to refill them, outside the Nitron da Amazonia company, in Manaus, Amazonas state, Brazil, Friday, Jan. 15, 2021. Doctors in the Amazon rainforest’s biggest city are having to choose which COVID-19 patients can breathe amid dwindling oxygen stocks and an effort to airlift some of the infected to other states. (AP Photo/Edmar Barros)
