title: Population-Based Study of Trachoma in Guatemala.
abstract: OBJECTIVE
  A prevalence survey for active trachoma in children aged under 10 years and trichiasis in women aged 40 years and older was carried out in four districts in the Sololá region in Guatemala, which is suspected of still having a trachoma problem.
  
  
  METHODS
  Population-based surveys were undertaken in three districts, within 15 randomly selected communities in each district. In addition, in a fourth district that borders the third district chosen, we surveyed the small northern sub-district, by randomly selecting three communities in each community, 100 children aged under 10 years were randomly selected, and all females over 40 years. Five survey teams were trained and standardized. Trachoma was graded using the World Health Organization simplified grading scheme and ocular swabs were taken in cases of clinical follicular or inflammatory trachoma. Prevalence estimates were calculated at district and sub-district level.
  
  
  RESULTS
  Trachoma rates at district level varied from 0-5.1%. There were only two sub-districts where active trachoma approached 10% (Nahualá Costa, 8.1%, and Santa Catarina Costa, 7.3%). Trichiasis rates in females aged 40 years and older varied from 0-3%. Trachoma was likely a problem in the past.
  
  
  CONCLUSIONS
  Trachoma is disappearing in the Sololá region in Guatemala. Health leadership may consider further mapping of villages around the areas with an especially high rate of trachoma and infection, and instituting trichiasis surgery and active trachoma intervention where needed.
authors.affiliation: Pan American Health Organization , Bogota, Colombia .
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Silva
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Diaz
authors.forename: Eugenio
authors.initials: E
authors.lastname: Maul
authors.forename: Beatriz E
authors.initials: BE
authors.lastname: Munoz
authors.forename: Sheila K
authors.initials: SK
authors.lastname: West
mesh_terms: D000328:Adult; D002648:Child; D002675:Child, Preschool; D002692:Chlamydia trachomatis / Q000302:isolation & purification; D005260:Female; D006166:Guatemala / Q000453:epidemiology; D006306:Health Surveys; D006801:Humans; D007223:Infant; D008297:Male; D015995:Prevalence; D014141:Trachoma / Q000175:diagnosis / Q000453:epidemiology* / Q000382:microbiology; D058457:Trichiasis / Q000175:diagnosis / Q000453:epidemiology* / Q000382:microbiology
keywords: Chlamydia trachomatis; Guatemala; South America; population-based survey; trachoma