Relatives of patients hospitalized with COVID-19 line up to refill empty oxygen tanks outside the Nitron da Amazônia company, in Manaus, Amazonas state, Brazil, on Jan. 15.

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. (AP Photo/Edmar Barros)