An Epidemiological Study on Tuberculosis in Childhood

概要

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Epidemiological factors in 67 cases of childhood tuberculosis diagnosed for recent 5 years in our hospital were analyzed in order to find a clue to decrease the outbreak of the disease in childhood. The history of BCG vaccination were confirmed in 75% (24/32) of school children, but in only 11.4% (4/35) of preschool children. We empasize that BCG vaccination should be carried out as young as possible in infantile period<BR>Source cases were presumed in 46 out of 67 patients (68.7%), and most of them were highly infectious.<BR>Thirty three patients (49.3%) were bacteriologically positive and the positive rate was higher in patients with symptoms than in patients discovered by the family contacts examina-tion.<BR>The intervals between discovery of patients and source cases were within 3 months in preschool children, but over 3 months in most school children. This difference between two age groups reflects the developing speed of the disease. Therfore, when a new tuberculosis patient would be found, a contacts examination should be carried out for younger children as soon as possible, especially who had intimate contacts with the bacilli positive patients.
日本小児呼吸器疾患学会の論文