Service to Committees and Boards
- Chairperson of the Medical Research Council of South Africa, 1994-1998; (reappointed)
- Member of the Advisory Panel for Departments of Arts Culture, Science & Technology on Research and Technology Audit, 1996-1998;
- First Secretary-General of the Academy of Science of South Africa, 1996-1998;
- Chairperson of the Advisory Board of the National Accelerator Centre, 1994-1999;
- Chairperson of the National Science and Technology Forum, 1995-1999;
- Member of the Board on Research and Technology Foresight Steering Group, 1996-2000;
- Member of the National Advisory Council on Innovation (NACI), 1998-2001(reappointed);
- Member of the Council of Higher Education(CHE), 1998-2000;
- Member of the Council on Higher Education‘s Quality Control Council, 1999-2000;
- Member of the Presidential Advisory Panel on HIV/AIDS, 2000;
- Member of the founding Board of Directors of the International AIDS Vaccine Initiative, 1999-2001;
- Member of the UNAIDS/WHO Vaccine Committee and UNAIDS/WHO HIV/AIDS Prevention Group, 1999-2001;
- Chairperson of the National Nuclear Regulator, 2000-2002;
- Chairperson of the Board of Directors of the Mail and Guardian 2002 to March 2011;
- Advisory member to the European Commission Round Table meeting on Malaria, TB and HIV/AIDS that led to the establishment of the European and Developing Countries Clinical Trials Platform, 2002;
- Member of the National Advisory Council on Innovation (1998-2000), reappointed 2002;
- Chairperson of the Heads of Science Councils and later the Committee of Heads of Organisations of Research and Technology, 1999-2002;
- Member of the Board of Directors of the International AIDS Vaccine Initiative, 1999-2004;
- Founder member and founding Chairperson of the UNAIDS/WHO African Aids Vaccine Programme (AAVP), 2000-2004;
- Chairperson of the Ethics thematic group of the AAVP;
- Member of the Board of Directors of the Global Alliance for TB Drug Development (GATBD) 2000-2004;
- Member of the Advisory Committee of the Oxford Round Table, 2003-2004;
- Member of the National Working Group appointed by Prof Kader Asmal, the Minister of Education in March 2001 to advise and make recommendations on the restructuring of the Higher Education sector in South Africa;
- Chairperson of the Rhodes Scholarship Committee in KwaZulu-Natal, 2003-2007;
- Council Member of the Global Vaccine Enterprise, since July 2008;
- Member of the Scientific Advisory Board, Mymetics Switzerland, since 2009;
- Chairperson of the Health Sciences Review Committee, since 2010-;
- Member of the National Planning Commission since May 2010;
- Chairperson of the Transformation Oversight Committee for Public Universities 2013.
- Chairperson of a 10 member Medical Task Team established to investigate ‘factors affecting the optimal functioning of the three military hospitals in South Africa’ - 2014