COVID-19 screening of asymptomatic patients admitted through emergency departments in Alberta: a prospective quality-improvement study

Departments of Medicine (Ravani, Manns) and Community Health Sciences (Ravani, Manns), and O’Brien Institute for Public Health (Ravani, Manns), and Libin Cardiovascular Institute of Alberta (Ravani, Manns), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Departments of Medicine, and Medical Microbiology and Immunology (Saxinger, Chandran), Faculty of Medicine and Dentistry, University of Alberta; Infection Prevention and Control (Chandran), Alberta Health Services, Edmonton, Alta.; Department of Microbiology, Immunology and Infectious Diseases (Fonseca), Cumming School of Medicine, University of Calgary; Alberta Precision Laboratories Calgary (Fonseca), Alberta Health Services, Calgary, Alta.; National Microbiology Laboratory (Murphy), Public Health Agency of Canada; Alberta Precision Laboratories Edmonton (Murphy), Alberta Health Services, Edmonton, Alta.; Department of Emergency Medicine (Lang), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Alberta Health Services (McDougall), Edmonton, Alta.

Departments of Medicine (Ravani, Manns) and Community Health Sciences (Ravani, Manns), and O’Brien Institute for Public Health (Ravani, Manns), and Libin Cardiovascular Institute of Alberta (Ravani, Manns), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Departments of Medicine, and Medical Microbiology and Immunology (Saxinger, Chandran), Faculty of Medicine and Dentistry, University of Alberta; Infection Prevention and Control (Chandran), Alberta Health Services, Edmonton, Alta.; Department of Microbiology, Immunology and Infectious Diseases (Fonseca), Cumming School of Medicine, University of Calgary; Alberta Precision Laboratories Calgary (Fonseca), Alberta Health Services, Calgary, Alta.; National Microbiology Laboratory (Murphy), Public Health Agency of Canada; Alberta Precision Laboratories Edmonton (Murphy), Alberta Health Services, Edmonton, Alta.; Department of Emergency Medicine (Lang), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Alberta Health Services (McDougall), Edmonton, Alta.

Departments of Medicine (Ravani, Manns) and Community Health Sciences (Ravani, Manns), and O’Brien Institute for Public Health (Ravani, Manns), and Libin Cardiovascular Institute of Alberta (Ravani, Manns), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Departments of Medicine, and Medical Microbiology and Immunology (Saxinger, Chandran), Faculty of Medicine and Dentistry, University of Alberta; Infection Prevention and Control (Chandran), Alberta Health Services, Edmonton, Alta.; Department of Microbiology, Immunology and Infectious Diseases (Fonseca), Cumming School of Medicine, University of Calgary; Alberta Precision Laboratories Calgary (Fonseca), Alberta Health Services, Calgary, Alta.; National Microbiology Laboratory (Murphy), Public Health Agency of Canada; Alberta Precision Laboratories Edmonton (Murphy), Alberta Health Services, Edmonton, Alta.; Department of Emergency Medicine (Lang), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Alberta Health Services (McDougall), Edmonton, Alta.

Departments of Medicine (Ravani, Manns) and Community Health Sciences (Ravani, Manns), and O’Brien Institute for Public Health (Ravani, Manns), and Libin Cardiovascular Institute of Alberta (Ravani, Manns), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Departments of Medicine, and Medical Microbiology and Immunology (Saxinger, Chandran), Faculty of Medicine and Dentistry, University of Alberta; Infection Prevention and Control (Chandran), Alberta Health Services, Edmonton, Alta.; Department of Microbiology, Immunology and Infectious Diseases (Fonseca), Cumming School of Medicine, University of Calgary; Alberta Precision Laboratories Calgary (Fonseca), Alberta Health Services, Calgary, Alta.; National Microbiology Laboratory (Murphy), Public Health Agency of Canada; Alberta Precision Laboratories Edmonton (Murphy), Alberta Health Services, Edmonton, Alta.; Department of Emergency Medicine (Lang), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Alberta Health Services (McDougall), Edmonton, Alta.

Departments of Medicine (Ravani, Manns) and Community Health Sciences (Ravani, Manns), and O’Brien Institute for Public Health (Ravani, Manns), and Libin Cardiovascular Institute of Alberta (Ravani, Manns), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Departments of Medicine, and Medical Microbiology and Immunology (Saxinger, Chandran), Faculty of Medicine and Dentistry, University of Alberta; Infection Prevention and Control (Chandran), Alberta Health Services, Edmonton, Alta.; Department of Microbiology, Immunology and Infectious Diseases (Fonseca), Cumming School of Medicine, University of Calgary; Alberta Precision Laboratories Calgary (Fonseca), Alberta Health Services, Calgary, Alta.; National Microbiology Laboratory (Murphy), Public Health Agency of Canada; Alberta Precision Laboratories Edmonton (Murphy), Alberta Health Services, Edmonton, Alta.; Department of Emergency Medicine (Lang), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Alberta Health Services (McDougall), Edmonton, Alta.

Departments of Medicine (Ravani, Manns) and Community Health Sciences (Ravani, Manns), and O’Brien Institute for Public Health (Ravani, Manns), and Libin Cardiovascular Institute of Alberta (Ravani, Manns), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Departments of Medicine, and Medical Microbiology and Immunology (Saxinger, Chandran), Faculty of Medicine and Dentistry, University of Alberta; Infection Prevention and Control (Chandran), Alberta Health Services, Edmonton, Alta.; Department of Microbiology, Immunology and Infectious Diseases (Fonseca), Cumming School of Medicine, University of Calgary; Alberta Precision Laboratories Calgary (Fonseca), Alberta Health Services, Calgary, Alta.; National Microbiology Laboratory (Murphy), Public Health Agency of Canada; Alberta Precision Laboratories Edmonton (Murphy), Alberta Health Services, Edmonton, Alta.; Department of Emergency Medicine (Lang), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Alberta Health Services (McDougall), Edmonton, Alta.

Departments of Medicine (Ravani, Manns) and Community Health Sciences (Ravani, Manns), and O’Brien Institute for Public Health (Ravani, Manns), and Libin Cardiovascular Institute of Alberta (Ravani, Manns), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Departments of Medicine, and Medical Microbiology and Immunology (Saxinger, Chandran), Faculty of Medicine and Dentistry, University of Alberta; Infection Prevention and Control (Chandran), Alberta Health Services, Edmonton, Alta.; Department of Microbiology, Immunology and Infectious Diseases (Fonseca), Cumming School of Medicine, University of Calgary; Alberta Precision Laboratories Calgary (Fonseca), Alberta Health Services, Calgary, Alta.; National Microbiology Laboratory (Murphy), Public Health Agency of Canada; Alberta Precision Laboratories Edmonton (Murphy), Alberta Health Services, Edmonton, Alta.; Department of Emergency Medicine (Lang), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Alberta Health Services (McDougall), Edmonton, Alta.

Departments of Medicine (Ravani, Manns) and Community Health Sciences (Ravani, Manns), and O’Brien Institute for Public Health (Ravani, Manns), and Libin Cardiovascular Institute of Alberta (Ravani, Manns), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Departments of Medicine, and Medical Microbiology and Immunology (Saxinger, Chandran), Faculty of Medicine and Dentistry, University of Alberta; Infection Prevention and Control (Chandran), Alberta Health Services, Edmonton, Alta.; Department of Microbiology, Immunology and Infectious Diseases (Fonseca), Cumming School of Medicine, University of Calgary; Alberta Precision Laboratories Calgary (Fonseca), Alberta Health Services, Calgary, Alta.; National Microbiology Laboratory (Murphy), Public Health Agency of Canada; Alberta Precision Laboratories Edmonton (Murphy), Alberta Health Services, Edmonton, Alta.; Department of Emergency Medicine (Lang), Cumming School of Medicine, University of Calgary, Calgary, Alta.; Alberta Health Services (McDougall), Edmonton, Alta.