Tuberculosis Infection in School Children: Prevalence, Annual Risk and Determinants
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Date
1990
Authors
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Journal ISSN
Volume Title
Publisher
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
s t udy . The survey consisted of a set of questionnaire,
assessement of nutritiona l status, examination
of t he _presence of BGG sc or and t uberculin skin
testing wi th PPD - RT 23 •
The prevalence of tuberculosis infection was
1 2 .6 ~~ ( 11.17% to 14.0%; confidence limits 95% ) •
The mean nge Has 10. 3 years. The avarage annual
risk of tuberculosis infection was 1.35% ( 1.1 8% to
1. 5 %, confidence limits 95 ~ ) Boys &girls have
eq ua l risk of infection unlike children coming from
bigger fami l y sized have greater ( P~0.05) It was
also found tha t 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 BeG scar
increased a~ the distance of their homes from health
institution decreased (P~0.001 for the trend) •
Vii
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 morethan
children had
a ·month _ ahowed
someone in the
ths,t ::10..3% · . Qf :the ·
household who coughed.
This study had also estimated the incidence of
smear positive tuberculo sis which is 81 cases per
10.0. , 0.0.0. popul ation per yenr that is 334 cases in
Yifatna Timuga The incidence of tuberculosis
meningitis in age group 0. - 4 in this study is
7/ 10.0. , 0.0.0. total population , that is 28 cases per
year in Yifatna Timuga awrnja
Description
Keywords
Tuberculosis Infection