1. Département de Microbiologie-Infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
2. Human Health Therapeutics, National Research Council Canada, Ottawa, ON K1N 5A2, Canada
3. Department of Microbiology and Immunology, Western University, London, ON N6A 3K7, Canada
4. Galveston National Laboratory, Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
5. Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, SK S7N 5E3, Canada
6. Bristol Veterinary School, University of Bristol, Langford House, Langford, BS40 5DU Bristol, UK