Table 1. Testing Interventions.

Testing intervention	Staff frequency	Resident frequency	Limit of detection	Turnaround time, d
None	NA	NA	105	<1
Weekly antigen	Weekly	Weekly	105	<1
Weekly antigen, staff only	Weekly	NA	105	<1
2.3 times/wk antigen	2.3 times/wk	2.3 times/wk	105	<1
2.3 times/wk antigen, staff only	2.3 times/wk	NA	105	<1
Daily antigen	Daily	Daily	105	<1
Daily antigen, staff only	Daily	NA	105	<1
Weekly PCR	Weekly	Weekly	103	2
2.3 times/wk PCR	2.3 times/wk	2.3 times/wk	103	2
Daily PCR	Daily	Daily	103	2

Abbreviation: PCR, polymerase chain reaction.