The incidence of respiratory illness and tuberculin sensitivity of children below 15 years were studied among 245 families in village Chinimore and the observations were compared between two groups families keeping livestock and families non-keeping livestock. There were 135 (out of 446) children with respiratory illness with 30.2% incidence and 45 (out of 187 tuberculin tested) children were positive to Mantoux test. Families keeping livestock had statistically significantly more (P 25.18 of 0.1% level) tuberculin sensitive children.