Baldachin: Ceiling HEPA-filtration to Prevent Nosocomial Transmission of COVID-19

"Environmental intervention: Equipment of a patient space of a patient with confirmed COVID-19 in open-space multiple bed Intermediate Care Unit areas with a mobile, optimally placed high efficiency particulate air (HEPA)-equivalent air filtration unit (Baldachin) in addition to existing room ventilation and hospital policy infection prevention and control measures."