Pfizer vaccine less effective against COVID variant study

For the first time in more than a year, many Americans are feeling optimistic that the pandemic could soon be a thing of the past, especially as vaccines have been driving down COVID-19 cases. But experts warn that there’s still a concern that the new Delta variant could spread the virus and that the vaccine offers less protection against it. RT America’s Sayeh Tavangar has the story. #QuestionMore #RTAmerica #InQuetion #Pfizer #Covid #Delta Get exclusive content and watch full episodes now by downloading the app: