In 1918, America was fighting 2 wars, with World War One overseas, and an even deadlier battle at home. It was the pandemic of 1918, known as the Spanish flu, and it was killing Americans quickly and in large numbers. Anderson Cooper, Dr. Anthony Fauci and others trace the evolution of this virus and look at lessons that should have been learned from back then.

Dr. Sanjay Gupta, Dr. Anthony Fauci, Dr. Deborah Birx, Dr. Stephen Hahn and Dr. Robert Redfield discuss what went right and what went wrong with the nation's response to the COVID-19 pandemic.