Former CDC Director Dr. Richard Besser joins us live to discuss new vaccine recommendations for newborns; The cast of "Avatar: Fire and Ash" talk the blockbuster franchise's latest installment; A cappella group Straight No Chaser performs their new song "Christmas is Different;" and more on ABC’s Good Morning America. ––– Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G ABC News is your daily source of breaking national and world news, exclusive interviews and 24/7 live