At the end of the article. > Ellebedy’s team has observed early signs that Pfizer’s mRNA vaccine should trigger the production of the same cells. But the persi

At the end of the article. > Ellebedy’s team has observed early signs that Pfizer’s mRNA vaccine should trigger the production of the same cells. But the persistence of antibody production, whether elicited by vaccination or infection, does not ensure long-lasting immunity to COVID-19. The ability of some emerging SARS-CoV-2 variants to blunt the protective effects of antibodies means that additional immunizations may be needed to restore levels, says Ellebedy. “My presumption is we will need a booster.” The idea seems to be that an infection is like a single dose of the vaccine, so you still need another shot for the best immunity.