Tuberculosis Infection in School Children: Prevalence, Annual Risk and Determinants.
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Date
1990
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Addis Ababa University
Abstract
In a tuberculin survey in Yifatna Timuga Awraja, Northern Shoa , Ethiopia 1997 elementary school children ; 1046 ( 52.4% ) males &. 9 51 (47.6%) females Here in the age group 7 to 14 participated in the study. The survey consisted of a set of questionnaire, assessment of nutritional status, examination of the presence of BGG scar and tuberculin skin testing with PPD - RT 23 .The prevalence of tuberculosis infection was1 2 .6 ~~ ( 11.17% to 14.0%; confidence limits 95% ) .The mean age Has 10. 3 years. The average annual risk of tuberculosis infection was 1.35% (1.1 8% to1. 5 %, confidence limits 95 ~ ) Boys &girls have equal risk of infection unlike children coming from bigger family sized have greater ( P~0.05) It was also found that children who drink cows' milk have equal risk of infection compared with those do not ( p 7 0 . 05 ) , relative risk is 1 . The data also provided that the BGG coverage in this sge group was 8 . 41%. The proportion of positives for BGG scar increased a~ the distance of their homes from health institution decreased (P~0.001 for the trend). The nutritional status of the surveyed children was assessed for mantoux positives and mantoux negatives 13.7 % of children in this study were severe ley undernourished. Another significant observation was that there was no difference in the risk of tuberculosis infection malnourished compared with well-nourished children ( P .>0..0.5 for the trend). Data on history of cough experienced by anyone of family members for more than children had a month showed that 10.3% of the household who coughed. This study had also estimated the incidence of smear positive tuberculosis which is 81 cases per10.0. , 0.0.0. Population per year that is 334 cases in Yifatna Timuga The incidence of tuberculosis meningitis in age group 0. - 4 in this study is7/ 10.0. , 0.0.0. total population , that is 28 cases per year in Yifatna Timuga awrnja.
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Tuberculosis Infection