i Clinical diagnosis of smear negative pulmonary tuberculosis in HIV-positive patients at Athlone Hospital in Botswana A dissertation submitted in partial fulfillment for the degree: Master in Public Health, at the School of Health Care Sciences, University of Limpopo, Medunsa Campus Researcher: Dr Taurayi Adriano Tafuma Student no: 200906031 Supervisor: Mrs. Rosemary Joyce Burnett (MPH)