Check out this video Yiyi, age 6, who was born deaf. She got a cochlear implant in her right ear a few years back. But now, if she disconnects it, she can still hear (!👂) This is because of a new gene therapy done on her other ear. First time ever hearing restored w/ a drug pic.twitter.com/qHEyeYTkIa

— Antonio Regalado (@antonioregalado) October 27, 2023