Every TB sputum positive patient can infect up to

- Every TB sputum positive patient can infect up to 10-15 persons per year EPIDEMIOLOGY OF T.B: Country with highest TB burden India ARI 1.5% Infected with T.B 40% Developing T.B per day 5000/day SS +ve per year 0.8 million Deaths per year 0.37 million Index of infection 1-2% Prevalence of infection 40% Incidence / prevalence of disease Sputum smear examination