This is an 8 minute trailer for a longer (1 hour) film on the 1918 pandemic. I’ve not seen any air dates for the completed film, but the transcript is available on the Flu.gov site.
1918-1919, the worst flu in recorded history killed an estimated 50 million people worldwide. The U.S. death toll was 675,000 - five times the number of U.S. soldiers killed in World War I. Where did the 1918 flu come from? Why was it so lethal? What did we learn?