1. University of British Columbia Centre for Disease Control, Vancouver, BC V5Z 4R4, Canada
2. Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, SK S7N 5E3, Canada
3. Emerging Pathogens Department, Southern Research Institute, Birmingham, AL 35205, USA
4. Departments of Pathology and Molecular Medicine and Biology, McMaster University, Hamilton, ON L8N 3Z5, Canada
5. Departments of Molecular and Medical Genetics and Microbiology and Biochemistry, University of Toronto, Toronto, ON M5S 1A8, Canada
6. Michael Smith Foundation for Health Research, Vancouver, BC V6H 3X8, Canada
7. Vaccine Evaluation Centre, British Columbia Institute for Children's and Women's Health, BC Children's Hospital, Vancouver, BC V6H 3V4, Canada
8. Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC 27834, USA
9. Michael Smith Laboratories and Departments of Biochemistry and Molecular Biology and Microbiology and Immunology, University of British Columbia, Vancouver, BC V6T 1Z3, Canada