Social & Preventive Medicine Which of the following is not true about Annual Infection rate of tuberculosis? A 1% increase in AIR is equivalent to 70 new cases of TB B It is one of the best indicator for evaluating tubercolusis problem and its trend C It expresses attacking force of Tuberculosis in community D It is 1.5% in India 💡 Explanation Which of the following is not true about Annual Infection rate of tuberculosis? ✓ Correct Answer: A. 1% increase in AIR is equivalent to 70 new cases of TB