Dr. Mark Loeb is a Professor in the Departments of Pathology and Molecular Medicine and Clinical Epidemiology and Biostatistics at McMaster University.

He is Division Director for Infectious Diseases and holds the Michael G DeGroote Chair in Infectious Diseases. Current projects include an NIH population genetics research program on dengue and a CIHR funded cluster randomized controlled trial to reduce the spread of influenza by immunizing children in Hutterite colonies.