In order to study the profile of patients who died of pulmonary tuberculosis with positive smear under tuberculosis chemotherapy and the impact of HIV status, a prospective study over eight months from 1 November 2005 to 30 June 2006 was conducted in tuberculosis department CHU point G. Among patients hospitalized for tuberculosis all forms, 73 cases of pulmonary tuberculosis were recorded including 54 sputum smear-positive (73.9%). The analysis focused on 28 deaths among pulmonary tuberculosis smear positive (prevalence of 51,85%). The age group of 16-35 years was the most represented with a sex ratio of 2.5. The different causes of morbidity which had a negative influence on the lethality of TB patients in order of importance were: the extent of the lesions (71.4%), HIV/AIDS status (63.15%), smoking (50 %) and a history of tuberculosis (25%) (p = 0.02). The deaths occurred early during the first week of hospitalization. The search for morbidity factors in any patient with tuberculosis should be systematical to improve their care.