Dr. Haase is a graduate of the University of the West Indies. He completed an internal medicine residency at Dalhousie University and an infectious diseases fellowship at the University of Manitoba in Winnipeg. He is now a part-time professor in the Department of Medicine, Division of General Internal Medicine.

Dr. Haase is involved in many research studies, both as a principal and co-investigator, focusing on the treatment of urinary tract infections, febrile neutropenia, genital herpes, HIV infection and infections in patients with cystic fibrosis. He is also involved in HSV vaccine studies.