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 tuberculosis problem and its trend C It expresses attacking force of Tuberculosis in community D It is 1.7 % 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