In a groundbreaking human trial in China, 10 Children born deaf had their hearing restored through a genetic therapy method. The children were injected with a reprogrammed virus carrying replacement DNA into the inner ear canal. Within a month, the children showed significant improvement in their hearing, with one child hearing close to normal speech and even whispers. Four out of the five children treated by the team recovered their hearing. The gene therapy targets a defect in the gene that produces a protein necessary for building the special hairs in the inner ear.

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