Hoe werk die Covid-vaksiene en hoe veilig en doeltreffend is die vaksiene? Mari Hudson het inlligting oor die vaksiene uit betroubare bronne saamgestel. Pfizer-BioNTech How it works: This is a messenger RNA (mRNA) vaccine, which uses a relatively new technology. Unlike vaccines that put a weakened or inactivated disease germ into the body, the Pfizer-BioNTech mRNA vaccine delivers a tiny piece of genetic code from the SARS CoV-2 virus to host cells in the body, essentially giving those cells instructions, or blueprints, for making copies of spike proteins (the spikes you see sticking out of the coronavirus in pictures online and on TV). The spikes do the work of penetrating and infecting host cells. These proteins stimulate an immune response, producing antibodies and developing memory cells that will recognize and respond if the body is infected with the actual virus. … Lees meer Soeklig op Covid-vaksiene