Relationship of ARTI to incidence and prevalence of tuberculosis in a district of south India.

  • 1 January 2006
    • journal article
    • Vol. 10  (1) , 115-7
Abstract
To validate the currently used empirical relationship between annual risk of tuberculous infection (ARTI) and incidence and prevalence of smear-positive cases. Two disease surveys to estimate the prevalence and incidence of tuberculosis (TB) among adults in Tiruvallur district, south India, and a tuberculin survey to estimate the ARTI among children. The incidence of TB was estimated to be 82 and prevalence 210 per 100,000 population and ARTI 1.6%. We estimated that 1% ARTI corresponded to 51 new and 131 prevalent cases. The currently used empirical relationship between ARTI and incidence can be used by programme managers as an effective monitoring tool.

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