Prevalence of trachoma in Yemen: results of population-based prevalence surveys of 42 evaluation units in nine governorates.

Ophthalmic Epidemiology
Adnan Ali ThabitGlobal Trachoma Mapping Project

Abstract

In suspected trachoma-endemic areas of Yemen, we sought to determine the prevalence of the sign trachomatous inflammation-follicular (TF) in children aged 1-9 years, and the potential individual and household risk factors for TF in that age group. We also sought to determine the prevalence of trichiasis in adults aged ≥15 years. We conducted a cluster-sampled survey in each of 42 evaluation units (EUs) comprising 166 rural districts of nine Governorates (Adh Dhale'a, Al Hodeihah, Al Jawf, Hadramoot, Hajjah, Ibb, Lahj, Ma'rib, Taiz) using the Global Trachoma Mapping Project systems and methodologies. Fieldwork was undertaken from September 2013 to March 2015. Risk factors for TF in children aged 1-9 years were evaluated using multilevel random effects logistic regression. The TF prevalence in children aged 1-9 years was ≥10% in two EUs (7 districts) and 5-9.9% in six EUs (24 districts). In adults aged ≥15 years, trichiasis prevalence was ≥0.2% in five EUs (19 districts). Being older (within the 1-9-year age bracket), being male, living in a household with higher numbers of children, and living in a household that reported the use of open defecation, were each independently associated with higher odds of TF. These surveys provide...Continue Reading

References

Jul 30, 2003·Lancet·Anthony W SolomonDavid C W Mabey
Jul 30, 2003·Lancet·David C W MabeyAllen Foster
Dec 27, 2005·The Lancet Infectious Diseases·Anthony W SolomonDavid C W Mabey
Jul 9, 2011·PLoS Neglected Tropical Diseases·Jennifer L SmithSimon Brooker
Jul 15, 2015·Ophthalmic Epidemiology·Anthony W SolomonAllen Foster
Nov 29, 2016·Ophthalmic Epidemiology·Robert KoAnthony W Solomon
Jul 26, 2017·The Lancet Infectious Diseases· The Lancet Infectious Diseases

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Citations

Nov 22, 2019·BMJ Global Health·David McMaster, Mahfouth Abdallah Bamashmus
Oct 8, 2020·The American Journal of Tropical Medicine and Hygiene·Anthony W SolomonMwelecele N Malecela

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