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WILL AM 580 Live Stream

In this Wednesday, March 11, 2020 file photo, a technician prepares COVID-19 coronavirus patient samples for testing at a laboratory in New York's Long Island.
John Minchillo/AP

The 21st Show

Illinois researchers working to solve long COVID’s puzzles

New research suggests many people who were not able to get tested early in the COVID pandemic — or even tested negative for the disease — may still be dealing with long COVID symptoms. We’ll talk about what we’re still learning with Dr. Igor Koralnik, co-director of the Northwestern Medicine Comprehensive COVID-19 Center.