<prompt> Which of the following is not false about annual risk of TBARI of 1 75 new casesCurrent ARI in India is 1.7It is represents new cases of TBIt is assessed by tuberculin conversion in previously non-vaccinated children  <response>: Incidence of TB infection Annual infection rate, Annual risk of Infection ARI : Percentage of population under study who will be newly infected not diseased or cases with TB among Non-infected in 1 year. Expresses attacking force of TB in community In developing countries 1 ARI corresponds to: 50 SS ve cases per 100,000 general population Tuberculin conversion index is the best indicator for evaluation of TB problem and its trend in the community. Current ARI in India : 1.5 Ref: Park 25th edition Pgno : 190-191 