🇺🇸US: "Rift over when to use N95s puts health workers at risk again"
"More than 3,600 health workers died of COVID-19, occupational safety experts warn that those on the front lines may once again be at risk"
"Scientifically, there were clear indications that the coronavirus SARS-CoV-2 spread through the air... Health workers are exposed for 8, 10, 12 hours a day."