As part of the United Nations’ post-war reconstruction program, a new World Health Organization (WHO) came into existence on September 1, 1948, with Canada’s Dr. Brock Chisholm as its first Director General. In addition to continuing previous international health functions such as quarantine services, biological standardization, disease nomenclature and emergency relief work, WHO launched campaigns against malaria, tuberculosis and malnutrition. It also began to create expert committees to examine other issues such as chronic diseases, cancer, environmental pollution and the administration of health organizations. By the 1970s, WHO had become a leader in organizing technical cooperation among members to enable health knowledge to be shared worldwide. Canadians participated actively by attending international conferences, serving on research and advisory committees and arranging visits and technical training for foreign health administrators wishing to examine Canada’s medicare system and health delivery practices.