Dr. Stephen Betschel is Staff Clinical Immunologist and Allergist in the Division of Allergy and Clinical Immunology at St. Michaels Hospital and Division of Respirology at University Health Network Toronto. He is an Assistant Professor of Medicine at University of Toronto where serves as the Program Director of the Adult Clinical Immunology and Allergy Residency Program. He earned his medical degree at McMaster University in 1998 and completed his Residency Program in Internal Medicine and Fellowship in Clinical Immunology and Allergy at University of Toronto. His postgraduate studies include Doctor of Philosophy Candidate in the Department of Molecular Genetics and Microbiology concentrating on identifying critical virulence factors associated with Group A Streptococcus ‘flesh eating disease’. Dr. Betschel’s primary clinical and research interests include adult immunodeficiencies, hereditary angioedema and occupational allergy. He has published on various aspects of diagnosis, management, quality of life, and pharmacoeconomics related to immunodeficiencies and hereditary angioedema. He is current Chair of the Canadian Hereditary Angioedema Network and serves as medical advisor for Immunodeficiency Canada, HAE Canada, and the Canadian Immunodeficiency Society. Dr. Betschel is a distinguished clinical educator. He completed the Master Teach Program at University of Toronto and is current member of the National Specialty Committee and Vice Chair of the Royal College of Canada Examination Board in Clinical Immunology and Allergy.