AI Article Synopsis
- Trachoma is an eye disease causing inflammation and potential eyelid scarring, leading to complications like trachomatous trichiasis (TT), and a study was conducted to assess its prevalence in Benin.
- The study involved 23 surveys that measured the occurrence of trachomatous inflammation-follicular (TF) and TT, with a total of 68,613 people examined through various methods of sampling.
- Results showed TF prevalence was below the 5% elimination threshold, but TT prevalence exceeded the 0.2% threshold in nine districts, indicating a need for enhanced case-finding and better access to surgical treatment for TT in Benin.
Article Abstract
Purpose: Trachoma is an infectious eye disease caused by . Infection causes conjunctival inflammation, which can be manifested by the sign known as trachomatous inflammation-follicular (TF). Repeated inflammation leads to eyelid scarring, which in susceptible individuals can cause in-turning of the eyelashes, referred to as trachomatous trichiasis (TT). This article describes 23 population-based surveys conducted in northern and central Benin to determine TF and/or TT prevalence for trachoma elimination purposes.
Methods: A total of 18 surveys estimated the prevalence of both TF and TT: two baseline surveys, eight impact surveys after implementation of interventions against trachoma, and eight surveillance surveys. Five other evaluation units (EUs) were surveyed for TT only. To estimate the TF prevalence, a target sample size of 1701 (baseline) and 1164 1-9-year-olds (impact and surveillance) was required, whereas 2818 ≥ 15-year-olds were required to estimate the less prevalent TT. In each EU, individuals were selected by two-stage cluster sampling and examined by certified graders for TF and/or TT.
Results: A total of 68,613 people were examined. TF prevalence estimates were under the 5% elimination threshold in all surveys. TT prevalence estimates were above the 0.2% elimination threshold in all five TT-only surveys and in four impact surveys, ranging from 0.2-0.57.
Conclusion: TF prevalence in Benin is low, but TT was above 0.2% in nine districts. Increased case-finding and continuing efforts to improve surgery accessibility will be needed to reduce the burden of TT in Benin.
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| http://dx.doi.org/10.1080/09286586.2023.2265796 | DOI Listing |
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