Email America reaches milestone with COVID-19 vaccine widely available to those who want it, but hesitancy still casts a shadow USA TODAY's panel of experts celebrate the success of the U.S. COVID-19 vaccine program but worry that although most Americans can get a shot, too many won't. Karen Weintraub and Elizabeth Weise, USA TODAY Published 5:48 pm UTC Apr. 19, 2021 As of Monday, COVID-19 vaccines are available to every American over 16 who wants a shot, but a panel of experts convened by USA TODAY remains deeply concerned about the people who say vaccines aren't needed. Anxiety about getting a shot is normal, expected and can be resolved with education and role models, several panelists said.