The highly contagious delta variant now accounts for 83% of new cases and a hospital in Memphis, Tennessee, is struggling with an influx of new cases while the state remains only 43% vaccinated. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/3uHCDO5 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 #DeltaVariant #Covid19 #Coronavirus #Vaccine