title: A community-based trachoma survey: prevalence and risk factors in the Tigray region of northern Ethiopia.
abstract: OBJECTIVE
  Trachoma is a public health problem in Ethiopia accounting for 35-50% of cases of blindness. This study aims to determine the prevalence of trachoma in Tigray and to evaluate whether common risk factors are also risk factors in this region.
  
  
  METHODS
  A cross sectional community-based survey was conducted. From six districts, a total of 48 villages were selected by a multistage cluster random sampling technique. A total of 3900 people who were selected randomly from 1200 households were assessed for signs of trachoma. Ophthalmic nurses used a simplified clinical grading system to assess stages of trachoma while environmentalists assessed risk factors for trachoma.
  
  
  RESULTS
  Of the 3900 people examined, 13% had trachomatous follicles (TF), 27% intense trachomatous inflammation (TI), 17.7% trachomatous scarring (TS), 3.4% trachomatous trichiasis (TT) and 0.3% had corneal opacity (CO). The presence of a kitchen with chimney had a protective effect on TS (Adjusted Odds Ratio [AOR] = 0.82; 95% Confidence Interval [CI]: 0.65-0.96) and TT (AOR = 0.80; 95% CI: 0.53; 0.97). Active trachoma was more prevalent among children (AOR = 0.97; 95% CI: 0.96-0.97), illiterates (AOR = 1.38; 95% CI: 1.13-1.69) and those who infrequently wash their face (AOR = 1.35; 95% CI: 1.18-1.54).
  
  
  CONCLUSIONS
  Trachoma is hyperendemic in the Tigray region. Mass chemotherapy, the expansion of primary eye care services, and promotion of a regular face washing habit are recommended. We recommend further investigations on the effect of domestic use of biomass energy on trachoma.
authors.affiliation: Regional Health Bureau of Tigray, Department for Diseases Prevention and Control, Ethiopia. melesemayrye@yahoo.com
authors.forename: Mengiste M
authors.initials: MM
authors.lastname: Mesfin
authors.forename: Julio
authors.initials: J
authors.lastname: de la Camera
authors.forename: Israel G
authors.initials: IG
authors.lastname: Tareke
authors.forename: G
authors.initials: G
authors.lastname: Amanual
authors.forename: T
authors.initials: T
authors.lastname: Araya
authors.forename: Abbi M
authors.initials: AM
authors.lastname: Kedir
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003430:Cross-Sectional Studies; D005002:Ethiopia / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D012424:Rural Population; D014141:Trachoma / Q000453:epidemiology*