1 Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.
2 Public Health Agency of Canada, Ottawa, ON, Canada.
3 Department of Public Health and Clinical Medicine, Section of Sustainable Health, Umeå University, Umeå, Sweden.
4 BlueDot, Toronto, ON, Canada; Department of Medicine, University of Toronto, Toronto, ON, Canada.
5 Department of Medicine, University of Toronto, Toronto, ON, Canada; Divisions of General Internal Medicine and Infectious Diseases, Toronto General Hospital, Toronto M5G 2C4, ON, Canada. Electronic address: isaac.bogoch@uhn.ca.