The Centers for Disease Control and Prevention has outlined how officials should prepare to distribute a COVID-19 vaccine to health care workers and other high-risk groups this fall. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/3jFeZwr 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 #COVID19Vaccine