The COVID-19 Vaccine: Inside America’s Race For An Answer

On this week’s Petrie Dish, we dive into the COVID-19 vaccine. First we answer: what is a vaccine? We've all gotten them, but have you ever wondered how they protect you from disease? Vaccine expert Joanne Turner gets into the nitty gritty of how vaccines work and walks us through the history of the first-ever vaccine, which treated another vicious virus that ravaged the world.