Best indicator of trend of Tuberculosis unaffected by current control measures is:-
Annual risk of infection: Is the propoion of population which will be primarily infected with tuberculosis in course of 1 year. Is incidence of infection of TB. Is known as 'Tuberculosis conversion Index'. Best indicator of trend of TB unaffected by current control measures. ARI: 1-2%. For every 1% rise of ARI, there are 50 SS +ve cases /Lac population.
Annual risk of infection
Prevalence of TB infection
% of primary drug resistance
% of multidrug resistance
RNTCP