The role of routine SARS-CoV-2 screening of healthcare-workers in acute care hospitals in 2020: a systematic review and meta-analysis

Table 2 Study characteristics and results of studies on nursing homes

First Author	Study type	Country	Population description	No. pos tested asymptomatic/sample size	Setting (Level)	Ward	Period of data collection	Mean Age of HCW	Gender distribution (female in %)
Bayle et al. [60]	Cohort	France	All asymptomatic or pauci-symptomatic nursing home employees	32/241 (13.3%)	8	8	16.–29.04.2020	39.9	83.8
Hassan et al. [61]	Cohort	Sweden	Employees of five home care service companies	13/387 (3.3%)	8	9	11.05.–17.06.2020	43	52.6
McBee et al. [62]	Cross-sectional	USA	Staff and residents of 123 nursing homes	31/13687 (0.2%) and 35/1,639 (2.1%)	8	0	21.04.–08.05.2020	N. A	N. A
Van Buul et al. [63]	Cross-sectional	Netherlands HCW	HCW	1/542 (0.002%)	8	0	04.–10.05.2020	45.7	91.3

HCW healthcare worker, N.A not applicable, Level 1: Primary Care (Primary Care Physician, Family Physician or Public Health Clinic); Level 2: Specialty Physician Care (Specialist Physician); Level 3: Hospital Care (Acute Care General Hospital or Ambulatory Surgical Center); Level 4: Specialty Hospital Care (Specialty Acute Care Hospital)

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