This week the number of COVID-19 cases worldwide surpassed 5 million, with most of the new cases coming from just four countries: the United States, Russia, Brazil and India.
Here & Now’s Jeremy Hobson speaks with Dr. Wafaa El-Sadr, professor of epidemiology and medicine at Columbia University.
This article was originally published on WBUR.org.
Copyright 2021 NPR. To see more, visit https://www.npr.org.