Support WBURFauci Says U.S. Needs More Time To 'Catch Up' On Vaccine RolloutPlay07:00Download AudioNoel KingJanuary 07, 2021 ShareDr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said that changes in vaccine distribution could be necessary depending on what happens in the next few weeks. (POOL/AFP via Getty Images)