What We Know and Don't Know About the Coronavirus

P.M. Edition for April 24th: Scientists are still searching for answers to key questions about the coronavirus. WSJ medical reporter Thomas Burton discusses the state of testing and treatment. Dr. Alexei Wagner answers listeners' questions. And Numbers columnist Jo Craven McGinty has more on DIY face masks. Annmarie Fertoli hosts. Learn more about your ad choices. Visit megaphone.fm/adchoices