This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: RNTCP, Subject name: Social & Preventive Medicine
Every TB sputum positive patient can infect up to:- 
Select and explain. 
A. 1-2 persons per year, B. 5-6 persons per year, C. 10-15 persons per year, D. 100-200 persons per year
C: 10-15 persons per year
Answer: C: 10-15 persons per year 
Explanation: TB transmission: - Slow rise, then plateau phase, then slow fall is characteristic in India - propagative epidemic person - to person transmission. - Thus, Every TB sputum positive patient can infect up to 10-15 persons per year.