Completing Baseline Mapping of Trachoma in Nepal: Results of 27 Population-Based Prevalence Surveys Conducted in 2013 and 2014.

Ophthalmic Epidemiology
Shekhar SharmaGlobal Trachoma Mapping Project

Abstract

Trachoma is endemic in parts of Nepal; implementation of the surgery, antibiotics, facial cleanliness, environmental improvement (SAFE) strategy started in 2002. Some suspected-endemic districts had not previously been mapped. We aimed to estimate the prevalences of trachomatous inflammation-follicular (TF) and trichiasis in those districts. Population-based prevalence surveys were undertaken in 27 districts. In each of those districts, two-stage cluster sampling was used to select a sample of 2000 children aged 1-9 years and 4000 adults aged ≥15 years from a total of 40 wards (clusters), drawn evenly from two subdistricts. Consenting eligible participants were examined for trachoma by Global Trachoma Mapping Project (GTMP)-certified graders, using the World Health Organization simplified grading system. Data were analyzed at district level using GTMP methods. A total of 43,200 households were surveyed, and 162,094 people were examined for trachoma. District-level TF prevalence in 1-9-year-olds ranged from 0% to 4.3% (95% confidence interval [CI] 2.4-6.2). Among adults aged ≥15 years, trichiasis prevalence ranged from 0% to 0.33% (95% CI 0.08-0.65). TF was not a public health problem in any of the 27 districts surveyed; thus, a...Continue Reading

References

Mar 11, 2009·Bulletin of the World Health Organization·Jeremiah NgondiPaul Emerson
Jul 9, 2011·PLoS Neglected Tropical Diseases·Jennifer L SmithSimon Brooker
Jul 15, 2015·Ophthalmic Epidemiology·Anthony W SolomonAllen Foster

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Citations

Nov 13, 2020·Transactions of the Royal Society of Tropical Medicine and Hygiene·David MabeySoumya Swaminathan

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Software Mentioned

R
R Foundation for Statistical Computing

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