How Do the New COVID-19 Vaccines Work?

The two vaccines showing most promise - and moving first through the regulatory process - are a new type of vaccine known as messenger RNA vaccines. Before COVID-19, mRNA vaccines have never been on the market, but they have been studied. To learn more about the mRNA vaccine technology we chatted with Richard Kuhn, MD, who holds an endowed chair at Purdue University and serves as editor-in-chief of Virology.