TrachomaAzithromycinEyelashesEyelid DiseasesEntropionHygieneTrichiasisBlindnessTanzaniaCommunicable Disease ControlEndemic DiseasesChlamydia trachomatisAnti-Bacterial AgentsPrevalenceGambiaSudanToilet FacilitiesConjunctivitisConjunctivaChlamydiaConjunctivitis, InclusionEthiopiaNepalNeglected Diseases