President Donald Trump asserted that a vaccine could be weeks away, but Dr. Robert Redfield said it’s likely one wouldn’t be broadly available until at least the summer of 2021. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/2ZKnuPz WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: http://abc.go.com/shows/world-news-tonight WATCH WORLD NEWS TONIGHT ON HULU: https://hulu.tv/33iKepm #WorldNewsTonight #CDC #Vaccine