Prevalence of Trachoma in Gambella Region, Ethiopia: Results of Three Population-Based Prevalence Surveys Conducted with the Global Trachoma Mapping Project

Aida Abashawl, Colin Macleod, John Riang, Ferede Mossisa, Michael Dejene, Rebecca Willis, Rebecca M. Flueckiger, Alexandre L. Pavluck, Addisu Tadesse, Tesfaye Haileselassie Adera, Anthony W. Solomon

Research output: Contribution to journalArticle

Abstract

Purpose: In Ethiopia, trachoma is a major public health problem, accounting for 11.5% of all cases of blindness. In Gambella, one of the country’s most remote regions, the 2005–2006 National Survey of Blindness, Low Vision and Trachoma estimated a region-level prevalence of active trachoma of 19.1% in those aged 1–9 years. Detailed district or sub-regional level estimates are required to implement interventions. Methods: Population-based prevalence surveys were carried out following a 2-stage cluster random sampling methodology and Global Trachoma Mapping Project protocols. As the 13 districts (woredas) in Gambella had relatively small populations, they were grouped together to form three evaluation units (EUs) of about 100,000 persons each, and all subsequent survey planning and sampling was carried out at EU-level. Results: Altogether, 558 cases of TF (17.2%) were identified in 3238 children aged 1–9 years across the three EUs. The adjusted TF prevalences in 1–9-year-olds for the three EUs were 11.5%, 12.5% and 19.3%; 14.4% for Gambella overall. A total of 142 cases of trichiasis (3.8%) were identified among 3781 adults aged 15 years or older, with age- and sex-adjusted EU-level trichiasis prevalences in adults being 0.8%, 1.3% and 2.4%; 1.5% overall. Conclusion: The high prevalences of TF and trichiasis throughout Gambella indicate a need for rapid scaling up of the World Health Organization SAFE strategy (surgery, antibiotics, facial cleanliness, and environmental improvement) to help meet the 2020 target of global elimination of trachoma as a public health problem.

LanguageEnglish (US)
Pages77-83
Number of pages7
JournalOphthalmic Epidemiology
Volume23
DOIs
StatePublished - Dec 7 2016

Fingerprint

Trachoma
Ethiopia
Trichiasis
Population
Blindness
Public Health
Low Vision
Surveys and Questionnaires
Anti-Bacterial Agents

Keywords

  • Ethiopia
  • Gambella
  • mapping
  • prevalence
  • trachoma

ASJC Scopus subject areas

  • Epidemiology
  • Ophthalmology

Cite this

Prevalence of Trachoma in Gambella Region, Ethiopia : Results of Three Population-Based Prevalence Surveys Conducted with the Global Trachoma Mapping Project. / Abashawl, Aida; Macleod, Colin; Riang, John; Mossisa, Ferede; Dejene, Michael; Willis, Rebecca; Flueckiger, Rebecca M.; Pavluck, Alexandre L.; Tadesse, Addisu; Adera, Tesfaye Haileselassie; Solomon, Anthony W.

In: Ophthalmic Epidemiology, Vol. 23, 07.12.2016, p. 77-83.

Research output: Contribution to journalArticle

Abashawl, A, Macleod, C, Riang, J, Mossisa, F, Dejene, M, Willis, R, Flueckiger, RM, Pavluck, AL, Tadesse, A, Adera, TH & Solomon, AW 2016, 'Prevalence of Trachoma in Gambella Region, Ethiopia: Results of Three Population-Based Prevalence Surveys Conducted with the Global Trachoma Mapping Project' Ophthalmic Epidemiology, vol 23, pp. 77-83. DOI: 10.1080/09286586.2016.1247875
Abashawl, Aida ; Macleod, Colin ; Riang, John ; Mossisa, Ferede ; Dejene, Michael ; Willis, Rebecca ; Flueckiger, Rebecca M. ; Pavluck, Alexandre L. ; Tadesse, Addisu ; Adera, Tesfaye Haileselassie ; Solomon, Anthony W./ Prevalence of Trachoma in Gambella Region, Ethiopia : Results of Three Population-Based Prevalence Surveys Conducted with the Global Trachoma Mapping Project. In: Ophthalmic Epidemiology. 2016 ; Vol. 23. pp. 77-83
@article{eb811c47f6b949d0a076e61dbeb20d87,
title = "Prevalence of Trachoma in Gambella Region, Ethiopia: Results of Three Population-Based Prevalence Surveys Conducted with the Global Trachoma Mapping Project",
abstract = "Purpose: In Ethiopia, trachoma is a major public health problem, accounting for 11.5\{%} of all cases of blindness. In Gambella, one of the country’s most remote regions, the 2005–2006 National Survey of Blindness, Low Vision and Trachoma estimated a region-level prevalence of active trachoma of 19.1\{%} in those aged 1–9 years. Detailed district or sub-regional level estimates are required to implement interventions. Methods: Population-based prevalence surveys were carried out following a 2-stage cluster random sampling methodology and Global Trachoma Mapping Project protocols. As the 13 districts (woredas) in Gambella had relatively small populations, they were grouped together to form three evaluation units (EUs) of about 100,000 persons each, and all subsequent survey planning and sampling was carried out at EU-level. Results: Altogether, 558 cases of TF (17.2\{%}) were identified in 3238 children aged 1–9 years across the three EUs. The adjusted TF prevalences in 1–9-year-olds for the three EUs were 11.5\{%}, 12.5\{%} and 19.3\{%}; 14.4\{%} for Gambella overall. A total of 142 cases of trichiasis (3.8\{%}) were identified among 3781 adults aged 15 years or older, with age- and sex-adjusted EU-level trichiasis prevalences in adults being 0.8\{%}, 1.3\{%} and 2.4\{%}; 1.5\{%} overall. Conclusion: The high prevalences of TF and trichiasis throughout Gambella indicate a need for rapid scaling up of the World Health Organization SAFE strategy (surgery, antibiotics, facial cleanliness, and environmental improvement) to help meet the 2020 target of global elimination of trachoma as a public health problem.",
keywords = "Ethiopia, Gambella, mapping, prevalence, trachoma",
author = "Aida Abashawl and Colin Macleod and John Riang and Ferede Mossisa and Michael Dejene and Rebecca Willis and Flueckiger, {Rebecca M.} and Pavluck, {Alexandre L.} and Addisu Tadesse and Adera, {Tesfaye Haileselassie} and Solomon, {Anthony W.}",
year = "2016",
month = "12",
day = "7",
doi = "10.1080/09286586.2016.1247875",
language = "English (US)",
volume = "23",
pages = "77--83",
journal = "Ophthalmic Epidemiology",
issn = "0928-6586",
publisher = "Informa Healthcare",

}

TY - JOUR

T1 - Prevalence of Trachoma in Gambella Region, Ethiopia

T2 - Ophthalmic Epidemiology

AU - Abashawl,Aida

AU - Macleod,Colin

AU - Riang,John

AU - Mossisa,Ferede

AU - Dejene,Michael

AU - Willis,Rebecca

AU - Flueckiger,Rebecca M.

AU - Pavluck,Alexandre L.

AU - Tadesse,Addisu

AU - Adera,Tesfaye Haileselassie

AU - Solomon,Anthony W.

PY - 2016/12/7

Y1 - 2016/12/7

N2 - Purpose: In Ethiopia, trachoma is a major public health problem, accounting for 11.5% of all cases of blindness. In Gambella, one of the country’s most remote regions, the 2005–2006 National Survey of Blindness, Low Vision and Trachoma estimated a region-level prevalence of active trachoma of 19.1% in those aged 1–9 years. Detailed district or sub-regional level estimates are required to implement interventions. Methods: Population-based prevalence surveys were carried out following a 2-stage cluster random sampling methodology and Global Trachoma Mapping Project protocols. As the 13 districts (woredas) in Gambella had relatively small populations, they were grouped together to form three evaluation units (EUs) of about 100,000 persons each, and all subsequent survey planning and sampling was carried out at EU-level. Results: Altogether, 558 cases of TF (17.2%) were identified in 3238 children aged 1–9 years across the three EUs. The adjusted TF prevalences in 1–9-year-olds for the three EUs were 11.5%, 12.5% and 19.3%; 14.4% for Gambella overall. A total of 142 cases of trichiasis (3.8%) were identified among 3781 adults aged 15 years or older, with age- and sex-adjusted EU-level trichiasis prevalences in adults being 0.8%, 1.3% and 2.4%; 1.5% overall. Conclusion: The high prevalences of TF and trichiasis throughout Gambella indicate a need for rapid scaling up of the World Health Organization SAFE strategy (surgery, antibiotics, facial cleanliness, and environmental improvement) to help meet the 2020 target of global elimination of trachoma as a public health problem.

AB - Purpose: In Ethiopia, trachoma is a major public health problem, accounting for 11.5% of all cases of blindness. In Gambella, one of the country’s most remote regions, the 2005–2006 National Survey of Blindness, Low Vision and Trachoma estimated a region-level prevalence of active trachoma of 19.1% in those aged 1–9 years. Detailed district or sub-regional level estimates are required to implement interventions. Methods: Population-based prevalence surveys were carried out following a 2-stage cluster random sampling methodology and Global Trachoma Mapping Project protocols. As the 13 districts (woredas) in Gambella had relatively small populations, they were grouped together to form three evaluation units (EUs) of about 100,000 persons each, and all subsequent survey planning and sampling was carried out at EU-level. Results: Altogether, 558 cases of TF (17.2%) were identified in 3238 children aged 1–9 years across the three EUs. The adjusted TF prevalences in 1–9-year-olds for the three EUs were 11.5%, 12.5% and 19.3%; 14.4% for Gambella overall. A total of 142 cases of trichiasis (3.8%) were identified among 3781 adults aged 15 years or older, with age- and sex-adjusted EU-level trichiasis prevalences in adults being 0.8%, 1.3% and 2.4%; 1.5% overall. Conclusion: The high prevalences of TF and trichiasis throughout Gambella indicate a need for rapid scaling up of the World Health Organization SAFE strategy (surgery, antibiotics, facial cleanliness, and environmental improvement) to help meet the 2020 target of global elimination of trachoma as a public health problem.

KW - Ethiopia

KW - Gambella

KW - mapping

KW - prevalence

KW - trachoma

UR - http://www.scopus.com/inward/record.url?scp=85001969702&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85001969702&partnerID=8YFLogxK

U2 - 10.1080/09286586.2016.1247875

DO - 10.1080/09286586.2016.1247875

M3 - Article

VL - 23

SP - 77

EP - 83

JO - Ophthalmic Epidemiology

JF - Ophthalmic Epidemiology

SN - 0928-6586

ER -