Tuberculosis Infection In School Children Prevalence Annual Risk And Determinants

In a tuberculin survey in Yifatna Timuga Awraja,rnNorthern Shoa , Ethiopia 1997 elementary school - -rnchildren ; 1046 ( 52.4% ) males &. 9 51 ( 47.6% ) femalesrnHere in the age group 7 to 14 participated in therns t udy . The survey consisted of a set of questionnaire,rnassessement of nutritiona l status, examinationrnof t he _presence of BGG sc or and t uberculin skinrntesting wi th PPD - RT 23 •rnThe prevalence of tuberculosis infection wasrn1 2 .6 ~~ ( 11.17% to 14.0%; confidence limits 95% ) •rnThe mean nge Has 10. 3 years. The avarage annualrnrisk of tuberculosis infection was 1.35% ( 1.1 8% torn1. 5 %, confidence limits 95 ~ ) Boys &girls haverneq ua l risk of infection unlike children coming fromrnbigger fami l y sized have greater ( P~0.05) It wasrnalso found tha t children who drink cows' milk havernequal risk of infection compared with those do notrn( p 7 0 . 05 ) , relative risk is 1 • The data alsornprovided that the BGG coverage in this sge grouprnwas 8 . 41% . The proportion of positives for BeG scarrnincreased a~ the distance of their homes from healthrninstitution decreased (P~0.001 for the trend) •rnViirnThe nutritional status of the surveyed childrenrnwas assessed for mantoux positives and mantouxrnnegatives 13.7 % of children in this study werernsevere ley undernourished.rnAnother significant observation was that therernwas no difference in the risk of tuberculosisrninfection malnourished compared with well nourishedrnchildren ( P .>0..0.5 for the trend). Data on historyrnof cough experienced by anyone of family membersrnfor morethanrnchildren hadrna ·month _ ahowedrnsomeone in thernths,t ::10..3% · . Qf :the ·rnhousehold who coughed.rnThis study had also estimated the incidence ofrnsmear positive tuberculo sis which is 81 cases perrn10.0. , 0.0.0. popul ation per yenr that is 334 cases inrnYifatna Timuga The incidence of tuberculosisrnmeningitis in age group 0. - 4 in this study isrn7/ 10.0. , 0.0.0. total population , that is 28 cases perrnyear in Yifatna Timuga awrnja

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