tuberculous infection in saharia, a primitive tribal community of central india.a cross-sectional tuberculin survey was carried out to estimate the prevalence of tuberculous infection and the annual risk of tuberculosis infection (arti) among children of saharia, a primitive ethnic group in madhya pradesh, central india. a total of 1341 children aged 1-9 years were subjected to tuberculin testing with 1 tu of ppd rt 23 and the reaction sizes were read after 72 h. the proportion of bcg scar-positive children was 34.6%. the frequency distribution of children by reaction sizes ...200818632124
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