EditorialPeople wait in line at a Taipei pharmacy to buy antigen test kits in Taipei, Taiwan, on Wednesday, May 4, 2022. (Lam Yik Fei/The New York Times)
EditorialA rapid antigen test from Maxim Biomedical containing an Omicron sample in a lab at Emory University in Atlanta on Feb. 23, 2022. (Johnathon Kelso/The New York Times)