mRNA vaccines face their first test with Covid-19. How do they work? - STAT

Companies like Moderna and Pfizer are working on mRNA vaccines that allow people to build immunity to viruses like SARS-CoV-2, the coronavirus that causes Covid-19.

These vaccines contain specifically designed mRNA that instructs cells how to make viral proteins.

Find out how mRNA vaccines can trigger immune cells, in this video?

I would like to know what are the off-target effects of these vaccines…?

By Helen Branswell

By Casey Ross

By Helen Branswell and Ed Silverman