There will be enough doses of the coronavirus vaccine available by the middle of 2021 to allow the US to get back to normality, dpa cited the head of the Centers for Disease Control (CDC) as saying today, on Wednesday during Senate testimony. The vaccinations will begin in November or December this year, but doses will be limited and "will have to be prioritized," CDC director Robert Redfield told the Senate committee investigating the response to Covid-19. The first doses would go to people like front-line health-care workers and the most vulnerable. "If you're asking me when is it going to be generally available to the American public, so we can begin to take advantage of vaccine to get back to our regular life, I think we're probably looking at late second quarter, third quarter 2021," Redfield said. The CDC director also stressed the need to wear face masks, calling the coverings "the important, powerful public health tool." He indicated the masks might even work better at protecting people from the new coronavirus than vaccines.