How Viruses Like COVID-19 May Work

A laboratory technician prepares samples for coronavirus analysis in a French medical biology laboratory, in Lisses, south of Paris, Saturday, March 21, 2020.

Siddhartha Mukherjee, physician and author of several books including The Emperor of All Maladies: A Biography of Cancer (Scribner, 2010), and most recently, The Gene: An Intimate History (Scribner, 2016), and executive producer — with filmmaker Ken Burns — of a new documentary film series airing on PBS April 7 and 14 called THE GENE, talks about what we know, and don't know yet, about COVID-19.