Which of the following is not true about Annual Infection rate of tuberculosis?
<p> 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>
1% increase in AIR is equivalent to 70 new cases of TB
It is one of the best indicator for evaluating tubercolusis problem and its trend
It expresses attacking force of Tuberculosis in community
It is 1.5% in India
Communicable diseases