President Joe Biden said he’s hopeful all who want a vaccine can get one by the spring, but Biden’s vaccine adviser said it could be fall before most can get a shot. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/3ppoByY WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: http://abc.go.com/shows/world-news-tonight WATCH WORLD NEWS TONIGHT ON HULU: https://bit.ly/3iQLwPp #WorldNewsTonight #PresidentJoeBiden #COVID19Vaccinations