1 Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario, Canada.
2 Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.
3 Kensington Vision and Research Centre, Kensington Eye Institute, University of Toronto, Toronto, Ontario, Canada.
4 J.C. Wilt Infectious Diseases Research Centre, Public Health Agency of Canada Ontario Manitoba Saskatchewan Regional Office, Winnipeg, Manitoba, Canada.
5 Canadian Science Centre for Human and Animal Health, Winnipeg, Manitoba, Canada.
6 Department of Microbiology, Mount Sinai Hospital, University Health Network, Toronto, Ontario, Canada.
7 Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.
8 Public Health Ontario Laboratory, Toronto, Ontario, Canada.