Hospitalization for Influenza A Versus B

aDivision of Infectious Diseases, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada;

bDivision of Infectious Diseases, Department of Paediatrics, Stollery Children’s Hospital, University of Alberta, Edmonton Alberta, Canada;

cDivision of Infectious Diseases, Department of Paediatrics, Montreal Children’s Hospital, McGill University, Montreal, Québec, Canada;

dVaccine Evaluation Center, BC Children’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada;

eCanadian Center for Vaccinology, IWK Health Centre, Dalhousie University, Halifax, Nova Scotia, Canada;

dVaccine Evaluation Center, BC Children’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada;

fSection of Infectious Diseases, Department of Paediatrics, Alberta Children’s Hospital, University of Calgary, Calgary, Alberta, Canada; and

gCentre for Immunization & Respiratory Infectious Diseases, Public Health Agency of Canada, Ottawa, Canada

gCentre for Immunization & Respiratory Infectious Diseases, Public Health Agency of Canada, Ottawa, Canada