title: [Evaluate the prevalence of trachoma in high risk area of China].
abstract: OBJECTIVE
  To determine the prevalence of trachoma in urban and rural area in China. To provide the data evidence for the strategies of eliminating trachoma in China.
  
  
  METHODS
  Survey was conducted in 13 suspect trachoma high prevalence provinces according to the World Health Organization trachoma grading system and Trachoma Rapid Assessment(TRA).
  
  
  RESULTS
  From 2004 to 2007, a total number of examined children which were younger than 10 years old was 59 630. The prevalence of TF was 0.94%. To sum up the data of 2004 and 2005, the prevalence of active trachoma was 1.71% for children.TT and CO was not reported. The results for subjects older than 50 years old showed that the prevalence of TT was 0.34%. We examined 26 857 adults in both 2004 and 2005.The prevalence of TF, TI, TS and CO was 0.03%,0.08%,0.88% and 0.05% respectively.
  
  
  CONCLUSIONS
  The prevalence of active trachoma of younger children was under 5%. However,the prevalence of TT of the adults was not reached the target.
authors.affiliation: Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Vision Science Key Lab., Beijing 100730, China.
authors.forename: A L
authors.initials: AL
authors.lastname: Hu
authors.forename: B C
authors.initials: BC
authors.lastname: Sun
authors.forename: T T
authors.initials: TT
authors.lastname: Cui
authors.forename: X
authors.initials: X
authors.lastname: Zhang
authors.forename: J H
authors.initials: JH
authors.lastname: Sang
authors.forename: Y Y
authors.initials: YY
authors.lastname: Zheng
authors.forename: X H
authors.initials: XH
authors.lastname: Yang
authors.forename: N L
authors.initials: NL
authors.lastname: Wang
mesh_terms: D000328:Adult; D000367:Age Factors; D002648:Child; D002681:China / Q000453:epidemiology; D006801:Humans; D008875:Middle Aged; D015995:Prevalence; D011795:Surveys and Questionnaires; D014141:Trachoma / Q000453:epidemiology*; D014944:World Health Organization