Stay informed with live updates on the current COVID-19 outbreak and visit our coronavirus hub for more advice on prevention and treatment.An mRNA vaccine delivers the instructions for making a bacterial or viral protein to our cells.
Our immune system then responds to these proteins and develops the tools to react to future infections with the pathogen. mRNA vaccine technology is not new, but there were no mRNA vaccines that had approval for use in humans until recently.Some vaccines use a whole virus or bacterium to teach our bodies how to build up immunity to the pathogen.
These pathogens are inactivated or attenuated, which means weakened. Other vaccines use parts of viruses or bacteria. Recombinant vaccine technology employs yeast or.