Revisiting a doctor on the front line of the pandemic

Back in March, as the United States was just beginning to experience a steep rise in coronavirus cases, NewsHour Weekend spoke with Dr. Alexis Langsfeld, who works in the emergency department of a New York City hospital, now in the epicenter of the pandemic. Special correspondent Karla Murthy caught up again with Dr. Langsfeld on the front line of the outbreak to learn more.