Doctors at Mount Sinai Head and Neck Institute performed the world’s first successful trachea transplant on Sonia Sein after she suffered a life-threatening asthma attack. READ MORE: https://gma.abc/3cUbAJF Subscribe to GMA's YouTube page: https://bit.ly/2Zq0dU5 Visit GMA's homepage: https://www.goodmorningamerica.com Follow GMA: TikTok: tiktok.com/@gma Facebook:facebook.com/GoodMorningAmerica Twitter: twitter.com/gma Instagram: instagram.com/goodmorningamerica #MountSinai #TracheaTransplant #Athsma #Surgery #GMA