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We evaluated the pattern of sputum smear positivity and assessed the effects of directly observed treatment short course (DOTS) among tuberculosis (TB) patients at the DOTS clinics in the Federal Capital Territory (FCT), Abuja. In total, 1391 patients were seen at six microscopy and treatment centres across the FCT between January and December 2003. Their sputa were screened microscopically for the presence of acid-fast bacilli (AFB) using the Ziehl-Neelsen staining technique. In total, 296 (21.3%) patients were smear positive; 201 (67.9%) were new cases and 95 (32.1%) were follow-up cases. The highest incidence of sputum smear positivity (24.8%) was found in those aged 21-30 years and the lowest incidence (6%) was found in those aged 71 years and above. No incidence of smear positivity was recorded in children aged 0-10 years. In total, 160 of the men screened were AFB positive (75% new cases …