The rapid spread of SARS-CoV-2, a novel coronavirus that emerged in late 2019, and the resulting Covid-19

disease has been labeled a Public Health Emergency of International Concern by the World Health Organization. What physicians need to know about transmission, diagnosis, and treatment is the subject of ongoing updates from infectious disease experts at the Journal.

In this audio interview conducted on April 1, 2020, the editors draw lessons from the early Covid-19 outbreak in Seattle and the growing crisis in New York City.