EditorialUV lights for disinfecting masks, which would hang on clothespins, at the University of Nebraska Medical Center in Omaha, Neb., March 20, 2020. (Calla Kessler/The New York Times)
EditorialN95 masks and other protective equipment are decontaminated inside the critical care decontamination system designed by Battelle in Columbus, Ohio on April 7, 2020. (Brian Kaiser/The New York Times)
EditorialCondensation collected on Steve Fatovic’s goggles as he waited outside to dry out after decontaminating following a call designated as P.U.I. (person under investigation for COVID-19) in Paterson, N.J., on Tuesday, March 24, 2020. (Chang W. Lee/The New York Times)