Kizzmekia Corbett is a 34-year-old viral immunologist, and she might help save the world. She leads the coronavirus vaccine research at the National Institutes of Health, and the mRNA vaccine they’ve developed in collaboration with Moderna has reported an astounding 94.5% efficacy. CNN Chief Medical Correspondent Dr. Sanjay Gupta talks to Corbett about her groundbreaking research, the pressures of a global pandemic and her suggestions for those trying to battle vaccine hesitancy. To learn more about how CNN protects listener privacy, visit cnn.com/privacy