Impact on performance of hearing screening program through prevalence and diagnostic age evaluation in elementary school students in north-eastern city of Iran, Mashhad

Screening protocol at elementary school entry suggested late diagnosis and poor outcome in Iran. National screening is necessary in newborns, elementary school entry and when suspect to HL. The parents, teachers and population should have much greater awareness of HL diagnosis. In present study, chicken pox may lead to HL, therefore routine vaccination is recommended.