Desperate for N95 masks, researchers test decontamination

One of the most important pieces of safety gear for health care workers amid the COVID-19 pandemic is the N95 mask, designed to filter out 95 percent of airborne particles. But the surge of patients with the highly contagious disease has meant way more demand than supply. Now, scientists are exploring whether it’s possible to decontaminate and reuse the essential coverings. John Yang reports.