We talk to a virologist about the merits and limits of antibody testing, and hear from an Illinois coroner who believes COVID-19 was infecting and killing people in his community long before the disease had been classified as a global pendemic.

Today on The 21st: a judge has entered an order blocking Illinois from enforcing its stay-at-home order on a Republican state legislator, women are shouldering a lot of the burden of "essential jobs," a look at the promise and peril of antibody testing for COVID-19, and Wait Wait... Don’t Tell Me host Peter Sagal talks about doing comedy in an empty room.