Medical Officer, Office(s) of Rch, Global Program on Acquired Immune Deficiency Syndrome, World Health Organization since 1989. Senior Lecturer, School of Medical, University of Zambia, Lusaka, 1986-1988. Medical Epidemiologist, Illinois Department of Public Health, United States of America, 1985-1986.
Medical Epidemiologist, Center for Prevention Services, Centers for Disease Control, Atlanta, Georgia, United States of America, 1983-1985. Rch Association, Yale Arbovirus Unit, Yale University School of Medical, United States of America, 1981-1983. Resident Physician, University Teaching Hospital, University of Zambia, 1979-1981.