| 1967 | National Heart Foundation Vacation Scholarship received from the University of Sydney |
| 1971 - 1973 | National Health and Medical Research Council (NHMRC) Scholarship for research in clinical immunology received from the University of Adelaide |
| 1976 | Australian-American Education Foundation (Fulbright Hays) Travel Award received |
| 1976 | Overseas Scholarship received from the Royal Australasian College of Physicians |
| 1976 - 1977 | Postdoctoral research fellowship at the University of California, USA |
| 1983 - 1986 | Member of the Adverse Drug Reactions Advisory Committee |
| 1985 | Member of the World Health Organisation (WHO) Western Pacific Committee to Develop Antibiotic Guidelines in Manila, Philippines |
| 1985 - 1987 | Professor of Medicine at the University of Sydney |
| 1986 - 1993 | Member of the Australian Drug Evaluation Committee |
| 1987 - | Professor of Clinical Infectious Diseases at the University of Sydney |
| 1988 - | Director of the Centre for Infectious Diseases and Microbiology at the University of Sydney at Westmead Hospital |
| 1988 - 1994 | Consultant in Infectious Diseases for the Australian Armed Services, New South Wales |
| 1989 - | Member of the New South Wales Advisory Committee on Infectious Diseases |
| 1989 - 1990 | Member of the Communicable Diseases Sub-committee of the Public Health Committee |
| 1989 - 1992 | President of the Australasian Society of Infectious Diseases |
| 1990 - | Member of the Ministerial Advisory Committee on AIDS Strategy |
| 1991 - | Medical Advisor in Quarantine |
| 1991 - | Member of the Army Research Advisory Board of the Department of Defence |
| 1991 - 1994 | Member of the Management Committee of the Nation Centre in HIV Epidemiology and Clinical Research |
| 1994 - | Chair of the Advisory Committee on HCW Infected with Blood-borne Viruses for the New South Wales Department of Health |
| 1994 | Sir Arthur Sims Commonwealth Travelling Professorship received |
| 1995 - | Deputy Head of the Department of Medicine's Western Clinical School at the University of Sydney |
| 1996 - | Member of the Grants Committee at the National Health and Medical Research Council (NHMRC) |
| 1997 - | Chair of the Project Grants Committee at the National Health and Medical Research Council (NHMRC) |
| 1997 - 1999 | Member of the Research Committee at the National Health and Medical Research Council (NHMRC) |
| 1997 - 1999 | Member of the Infectious Diseases Sub-committee of the New South Wales Medical Board |
