Stephane Lajoie obtained his Ph.D. from the department of Pathology at McGill University, following which he trained as a postdoctoral fellow at the Cincinnati Children’s Hospital Medical Centre in the division of Immunobiology. His post-doctoral work focused on the role of complement components (C3a, C5a) in mediating Th17 immune responses underlying severe asthma pathogenesis. In 2012, he was recruited as Assistant Scientist in the Department of Environmental Health and Engineering at the Johns Hopkins School of Public Health. In 2018, Dr. Lajoie was recruited as Assistant Professor in the Department of Otolaryngology. Dr. Lajoie’s broad scientific interest is to understand the regulation of innate immune responses at mucosal surfaces that shape type 2 immunity.