The Food and Drug Administration has authorized a vaccine by Pfizer and BioNTech that will start reaching the most at-risk Americans today. CNN Chief Medical Correspondent Dr. Sanjay Gupta talks through the final hurdles the vaccine had to clear over the weekend.To learn more about how CNN protects listener privacy, visit <a href="https://cnn.com/privacy">cnn.com/privacy</a> Learn more about your ad choices. Visit <a href="https://podcastchoices.com/adchoices">podcastchoices.com/adchoices</a>

Delivering the Vaccine

All over the world, there are people who are living extraordinary lives, full of happiness and health – and with hardly any heart disease, cancer or diabetes. Dr. Sanjay Gupta has been on a decades-long mission to understand how they do it, and how we can all learn from them. Scientists now believe we can even reverse the symptoms of Alzheimer’s dementia, and in fact grow sharper and more resilient as we age. Sanjay is a dad – of three teenage daughters, he is a doctor - who operates on the brain, and he is a reporter with more than two decades of experience - who travels the earth to uncover and bring you the secrets of the happiest and healthiest people on the planet – so that you too, can Chase Life.