Gearing up for my night shift in the COVID-19 intensive-care unit, I don my personal protective equipment (PPE)–a white plastic air-purifying respirator (PAPR) hood. The hood connects via a tube to a large battery pack that I strap onto my waist over my scrubs. I turn on the battery and shiver when the rush of cool air blows past my ears. I walk into a bright white antechamber where a safety officer inspects me.
“You’re good to go,” she says. “Stay safe.”