title: The epidemiology of trachoma in Chiapas (Mexico).
mesh_terms: D000818:Animals; D002648:Child; D002675:Child, Preschool; D004197:Disease Reservoirs; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008800:Mexico; D012307:Risk Factors; D014141:Trachoma / Q000453:epidemiology* / Q000517:prevention & control / Q000635:transmission