An Update on Airborne Transmission

How important is airflow to preventing the spread of Covid-19? As schools and other public buildings begin to reopen, Dr. Sanjay Gupta revisits a conversation with Joseph Allen, Director of the Healthy Buildings program at the Harvard T.H. Chan School of Public Health, about the science behind airborne transmission. To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices