Scientists race to answer the question: Will vaccines protect us against omicron?
NPR, December 2, 2021
There's hope that a third shot of an mRNA vaccine—a so-called booster—will work better than two shots, says virologist Pei-Yong Shi at University of Texas Medical Branch in Galveston, who works with Pfizer. First off, he says, the third dose doesn't just return your antibody levels to what they were after the second shot. The level is even higher. On top of that, the booster can actually help broaden out your defenses so that you can fight off not just one variant of SARS-CoV-2 but many different versions of it. "The booster increases the level of antibodies that can push back against the variants," Shi says. "So that's another advantage to the booster."