Annual risk of tuberculous infection in the western zone of India
Chadha, V.K.; Vaidyanathan, P.S.; Jagannatha, P.S.; Unnikrishnan, K.P.; Savanur, S.J. and Mini, P.A. (2003) Annual risk of tuberculous infection in the western zone of India. The International Journal of Tuberculosis and Lung Diseases, 7 (6). pp. 536-542.
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A community-based, cross-sectional tuberculin survey was conducted among children aged 1-9 years residing in a sample of rural and urban areas of six districts in the western zone of India. Stratified two-stage cluster sampling was adopted for selection of rural and urban clusters. A total of 48 473 children in 600 clusters underwent tuberculin testing with 1TU PPD RT23 with Tween 80; the induration was measured about 72 h after the test.
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