HealthDay
A new study of 13 U.S. medical centers finds that 6% of staff tested positive for prior infection with the new coronavirus, with almost half (44%) having no idea they'd ever contracted SARS-CoV-2. … One thing was clear, however: Use of masks, gowns, gloves and other protective gear by staff kept infection rates down. And when hospitals faced shortages of personal protective equipment (PPE), COVID-19 infections rose.