1 Department of Pediatrics, Division of Pediatric Infectious Diseases, Montreal Children's Hospital, Montreal, QC, Canada.
2 Department of Pediatrics, Division of Pediatric Critical Care, Montreal, QC, Canada.
3 Department of Pediatrics, Division of Pediatric Infectious Diseases, Montreal Children's Hospital, Montreal, QC, Canada; Department of Laboratory Medicine, Division of Medical Microbiology, McGill University Health Centre, Montreal, QC, Canada. Electronic address: jesse.papenburg@mcgill.ca.