Microbiology After initiation of DOTS therapy for category-I, first sputum examination is done at: March 2010 A 1 month of treatment B 2 months of treatment C 4 months of treatment D 6 months of treatment 💡 Explanation After initiation of DOTS therapy for category-I, first sputum examination is done at: March 2010 ✓ Correct Answer: B. 2 months of treatment