Rapid expansion of temporary, reliable airborne-infection isolation rooms with negative air machines for critical COVID-19 patients.

More airborne-infection isolation rooms are needed in centers that treat severely affected coronavirus 2019 patients. Wards and rooms must be carefully checked to ensure an ample supply of medical air and oxygen. Anterooms adjacent to airborne-infection isolation rooms are required to maintain pressure differentials and provide an area for donning/doffing or disinfecting medical equipment.