1. The COVID-19 vaccine rollout: how the current vaccine environment could impact uptake among adults ages 50 and older Author(s): McSpadden, James, authorCarter, Elizabeth, authorDean, Olivia, author Publication: Washington, DC : AARP Public Policy Institute, April 2021 Subject(s): AgedCOVID-19 VaccinesMiddle AgedPatient Acceptance of Health CareUnited States