<prompt> Which of the following is not true about Annual Infection rate of tuberculosis?1 increase in AIR is equivalent to 70 new cases of TBIt is one of the best indicator for evaluating tubercolusis problem and its trendIt expresses attacking force of Tuberculosis in communityIt is 1.5 in India  <response>: In developing countries 1 ARI corresponds to:50 SS ve cases per 100,000 general population. Park;s textbook of preventive and social medicine,K.Park,22nd edition,page no:168. p 