Social & Preventive Medicine If after 2 months of conventional antituberculous therapy, sputum smear examination is negative but culture is positive, it indicates – A Treatment failure B Transitional resistance C Resistant tuberculosis D category-II failure 💡 Explanation If after 2 months of conventional antituberculous therapy, sputum smear examination is negative but culture is positive, it indicates - ✓ Correct Answer: B. Transitional resistance