Dr. Ashish Jha, dean of the Brown University School of Public Health, discusses new guidance from the Centers for Disease Control and why the government will no longer hold back second doses. LEARN MORE: Azar, Trump administration will no longer hold back 2nd shots, recommend 65 and older get COVID vaccine: https://abcn.ws/2XFn6jy 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 #GMA #COVID19 #COVIDVaccine #OperationWarpSpeed