CNN CNN Newsroom With Poppy Harlow and Jim Sciutto August 23, 2021 13:27:00
Of data gathering, according to "the washington post." a third dose of the pfizer vaccine provides three times more protection than two doses al alone, in 60 and older, one of the most vulnerable groups. tell us the significance of that in terms of this next phase, getting boosters to people. >> it's very significant because they work. initially, we had the two-shot series because we had a primer boost where you let your immune system kind of know what's coming and then the second shot, which we were calling the booster shot. the second shot, which greatly amplifies the immune response. well, ...
Source: archive.org