Trachoma among children in community surveys from four African countries and implications of using school surveys for evaluating prevalence.

Abstract:

BACKGROUND:School surveys provide a convenient platform to obtain large child cohorts from multiple communities and are widely used as a proxy to determine community prevalence of neglected tropical diseases. The purpose of this study was to compare trachoma prevalence between preschool- and school-aged children and children who attend and do not attend school. METHODS:We analysed data from community-based trachoma surveys conducted from 2008-2011 in Ethiopia, Mali, Niger and Nigeria. The surveys utilised a cross-sectional, randomised cluster design. Individual-level data on school attendance was collected. RESULTS:Overall, 75 864 children aged 1-15 years from 2100 communities were included in the analysis. The prevalence of trachomatous inflammation follicular (TF) among these children in surveyed districts was 19.1% (95% CI 17.9-20.2%) in Ethiopia, 6.2% (95% CI 5.4-6.9%) in Niger, 4.6% (95% CI 4.2-4.9%) in Mali and 4.2% (95% CI 3.5-4.9%) in Nigeria. Controlling for age, sex and clustering, the OR of TF for school-attendees compared to non-attendees was 0.64 (95% CI 0.56-0.73) in Ethiopia, 0.67 (95% CI 0.56-0.80) in Mali, 1.03 (95% CI 0.81-1.16) in Niger and 1.06, (95% CI 0.65-1.73) in Nigeria. CONCLUSION:Estimating the prevalence of trachoma through examination of only school-going children risks underestimating the true prevalence.

journal_name

Int Health

journal_title

International health

authors

King JD,Odermatt P,Utzinger J,Ngondi J,Bamani S,Kamissoko Y,Boubicar K,Hassan AS,Nwobi BC,Jip N,Amnie A,Teferi T,Mosher AW,Stewart AE,Cromwell EA,Emerson PM

doi

10.1093/inthealth/iht027

subject

Has Abstract

pub_date

2013-12-01 00:00:00

pages

280-7

issue

4

eissn

1876-3413

issn

1876-3405

pii

iht027

journal_volume

5

pub_type

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