TABLE 2. Number of COVID-19 cases identified in nursing homes that conducted facility-wide SARS-CoV-2 testing as part of a statewide strategy targeting all nursing homes (statewide strategy) and those that conducted facility-wide testing only after identification of a known or suspected case (targeted strategy), by resident or health care provider cases identified before facility-wide testing — seven state and local health department jurisdictions, United States, March–June, 2020.

Types of cases known before testing	Statewide testing strategy*			Targeted testing strategy†
	No. of nursing homes§	No. of persons with positive test results¶		No. of nursing homes**	No. of persons with positive test results¶
		Mean (SD)	Range		Mean (SD)	Range
One or more residents	35	7.3 (11.2)	0–45	59	25.7 (21.9)	1–99
Health care personnel only	22	0.3 (0.6)	0–2	22	3.5 (3.2)	1–13
No cases known	125	0.8 (2.7)	0–25	5	0.4 (0.9)	0–2

Abbreviations: COVID-19 = coronavirus disease 2019; SD = standard deviation.

* Conducted in two health department jurisdictions (North Dakota and South Carolina).

^† Conducted in five health department jurisdictions (Arkansas; Detroit, Michigan; New Mexico; Utah; and Vermont).

^§ Thirteen nursing homes from the statewide strategy are excluded because the quantification of health care personnel cases and resident cases before the facility-wide testing was not possible.

^¶ At completion of facility-wide testing.

** Seven nursing homes from the targeted strategy are excluded because the quantification of health care personnel cases and resident cases before the facility-wide testing was not possible.