Social & Preventive Medicine Health programmes in India acdceff5 Diagnosis of TB acc to DOTS? A 1 out of 2 samples positive B 2 out of 3 samples positive C 3 out of 3 samples positive D None High-Yield Explanation 1 or 2 positives put of 2 sputum smear is considered as smear positive TB Ref: PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition pg 429