Surgeon General issues warning on Delta variant: 'If you are not vaccinated, you are in trouble'

Dr Vivek Murthy said Indian Delta variant poses greatest risk to unvaccinated people. He told CNN: 'This is a serious threat and we're seeing it spread among unvaccinated people.' Murthy urged people to get vaccinated, or mask-up if they haven't had their shot. Surgeon General said shots offer good protection from Delta variant - but also warned a future strain of COVID could end up defeating them. Delta variant now estimated to comprise 20 per cent of new infections in the United States. Early data from the United Kingdom suggests it is more transmissible, but that vaccines have made it far less dangerous. This comes as a DailyMail.com analysis found thousands of unvaccinated Americans could die if half of all those who haven't gotten shots caught the variant