Evaluation of cochlear involvement by transient evoked otoacoustic emission test in children with Crimean-Congo hemorrhagic fever

Objective: The aim of this study was to investigate cochlear involvement in child patients with Crimean-Congo hemorrhagic fever (CCHF) disease. Methods: Twenty-eight CCHF disease patients (56 ears) and 26 sex- and age-matched healthy control subjects (52 ears) were included in the study. Pure-tone audiometry at frequencies 0.25, 0.5, 1, 2, 4, and 6 kHz, immittance measures including tympanometry and acoustic reflex testing, and transient evoked otoacoustic emission (TEOAE) testing were performed in the patients and controls. Results: The proportion with a result of 'fail' for the TEOAE test in the CCHF patients was not statistically significant from the control group (p > 0.05). Conclusions: CCHF disease does not impair cochlear function in children. The clinical course of CCHF among children seems to be milder than in adults. (C) 2011 Elsevier Ireland Ltd. All rights reserved.