Table 1:

COVID-19 Built Environment Recommendations issued by the Centers for Disease Control and Prevention (CDC) and the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)

Intervention Category	Recommendation	Organization
Resident Isolation	Limit residential units to one resident per space/room	CDC
	Create physically separated COVID unit(s) within care facilities	CDC
	Place newly admitted residents in single occupant rooms/observation areas until they are symptom free for 14 days	CDC
	Keep residents cohorted within a unit, wing, or floor	CDC
Improved Indoor Air Quality	Increase outdoor air ventilation	CDC, ASHRAE
	Improve levels of filtration. Use MERV-13 rated filters, or higher, to help remove viruses from circulated air	CDC, ASHRAE
	Ensure ventilation systems operate properly	CDC
	Create areas with relative air pressure differences	ASHRAE
	Maintain 40–60% humidity	ASHRAE
Staff Separation/ Support	Provide spaces for staff PPE donning/doffing	ASHRAE
	Provide areas for staff respite	ASHRAE
	Provide spaces within COVID unit(s) to allow COVID-only staff to isolate from the rest of the facility. Recommended spaces include a staff restroom, a break room, and a work area	CDC