1 Faculty of Medicine (Krensky), University of Toronto; Department of Microbiology (Poutanen), University Health Network and Sinai Health System; Departments of Laboratory Medicine and Pathobiology (Poutanen) and of Medicine (Hota), University of Toronto; Department of Infection Prevention and Control (Hota), University Health Network, Toronto, Ont.
2 Faculty of Medicine (Krensky), University of Toronto; Department of Microbiology (Poutanen), University Health Network and Sinai Health System; Departments of Laboratory Medicine and Pathobiology (Poutanen) and of Medicine (Hota), University of Toronto; Department of Infection Prevention and Control (Hota), University Health Network, Toronto, Ont. susy.hota@uhn.ca.