EditorialJeff Jensen, Rachel Murphy, and their children, Cora, center, and Benjamin, gather in the family's home in Portland, Oregon, as Cora's blood oxygen level is checked with a pulse oximeter on Thursday, Sept. 17, 2020. (Celeste Noche/The New York Times)
EditorialClaudia Sheinbaum, the mayor of Mexico City and a protégée of President Andrés Manuel López Obrador, users a pulse oximeter at her office, Aug. 31, 2020. (Meghan Dhaliwal/The New York Times)