Dr. Richard Besser, former acting director of the CDC, tells TODAY that the rate of COVID-19 vaccinations is now “going to be a slower trickle, and we have to do everything we can to understand why different groups are hesitant.” He says that the numbers of people not returning for second vaccine doses points to the importance of Johnson & Johnson’s one-shot vaccine. » Subscribe to TODAY: http://on.today.com/SubscribeToTODAY » Watch the latest from TODAY: http://bit.ly/LatestTODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: http://on.today.com/ReadTODAY Find TODAY on Facebook: http://on.today.com/LikeTODAY Follow TODAY on Twitter: http://on.today.com/FollowTODAY Follow TODAY on Instagram: http://on.today.com/InstaTODAY Hesitancy Is Causing U.S. Vaccination Rate 'To Be A Slower Trickle’ | TODAY