Wondering why their son wasn’t speaking, the parents of two-year-old Danyal brought their son to the Aga Khan Hospital Dar es Salaam for a check-up and found that he had severe hearing loss. This led the hospital to perform its first cochlear implant surgery on January 24, 2022. Dr. Ahmed Mehanna, Professor of Otology and Cochlear Implantation at Alexandria School of Medicine, Egypt, explains the procedure.